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#define __Pyx_PyType_AsAsync(obj) (Py_TYPE(obj)->tp_as_async)
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typedef struct {
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} __Pyx_PyAsyncMethodsStruct;
#define __Pyx_PyType_AsAsync(obj) ((__Pyx_PyAsyncMethodsStruct*) (Py_TYPE(obj)->tp_reserved))
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#define __Pyx_void_to_None(void_result) ((void)(void_result), Py_INCREF(Py_None), Py_None)

#ifndef CYTHON_INLINE
  #if defined(__GNUC__)
    #define CYTHON_INLINE __inline__
  #elif defined(_MSC_VER)
    #define CYTHON_INLINE __inline
  #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
    #define CYTHON_INLINE inline
  #else
    #define CYTHON_INLINE
  #endif
#endif

#if defined(WIN32) || defined(MS_WINDOWS)
  #define _USE_MATH_DEFINES
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#include <math.h>
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#define __PYX_NAN() ((float) NAN)
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static CYTHON_INLINE float __PYX_NAN() {
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}
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#if PY_MAJOR_VERSION >= 3
  #define __Pyx_PyNumber_Divide(x,y)         PyNumber_TrueDivide(x,y)
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  #define __Pyx_PyNumber_Divide(x,y)         PyNumber_Divide(x,y)
  #define __Pyx_PyNumber_InPlaceDivide(x,y)  PyNumber_InPlaceDivide(x,y)
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#ifndef __PYX_EXTERN_C
  #ifdef __cplusplus
    #define __PYX_EXTERN_C extern "C"
  #else
    #define __PYX_EXTERN_C extern
  #endif
#endif

#define __PYX_HAVE__scipy__sparse__csgraph___shortest_path
#define __PYX_HAVE_API__scipy__sparse__csgraph___shortest_path
#include "string.h"
#include "stdio.h"
#include "stdlib.h"
#include "numpy/arrayobject.h"
#include "numpy/ufuncobject.h"
#include "numpy/npy_math.h"
#ifdef _OPENMP
#include <omp.h>
#endif /* _OPENMP */

#ifdef PYREX_WITHOUT_ASSERTIONS
#define CYTHON_WITHOUT_ASSERTIONS
#endif

#ifndef CYTHON_UNUSED
# if defined(__GNUC__)
#   if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
#     define CYTHON_UNUSED __attribute__ ((__unused__))
#   else
#     define CYTHON_UNUSED
#   endif
# elif defined(__ICC) || (defined(__INTEL_COMPILER) && !defined(_MSC_VER))
#   define CYTHON_UNUSED __attribute__ ((__unused__))
# else
#   define CYTHON_UNUSED
# endif
#endif
#ifndef CYTHON_NCP_UNUSED
# if CYTHON_COMPILING_IN_CPYTHON
#  define CYTHON_NCP_UNUSED
# else
#  define CYTHON_NCP_UNUSED CYTHON_UNUSED
# endif
#endif
typedef struct {PyObject **p; char *s; const Py_ssize_t n; const char* encoding;
                const char is_unicode; const char is_str; const char intern; } __Pyx_StringTabEntry;

#define __PYX_DEFAULT_STRING_ENCODING_IS_ASCII 0
#define __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT 0
#define __PYX_DEFAULT_STRING_ENCODING ""
#define __Pyx_PyObject_FromString __Pyx_PyBytes_FromString
#define __Pyx_PyObject_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
#define __Pyx_uchar_cast(c) ((unsigned char)c)
#define __Pyx_long_cast(x) ((long)x)
#define __Pyx_fits_Py_ssize_t(v, type, is_signed)  (\
    (sizeof(type) < sizeof(Py_ssize_t))  ||\
    (sizeof(type) > sizeof(Py_ssize_t) &&\
          likely(v < (type)PY_SSIZE_T_MAX ||\
                 v == (type)PY_SSIZE_T_MAX)  &&\
          (!is_signed || likely(v > (type)PY_SSIZE_T_MIN ||\
                                v == (type)PY_SSIZE_T_MIN)))  ||\
    (sizeof(type) == sizeof(Py_ssize_t) &&\
          (is_signed || likely(v < (type)PY_SSIZE_T_MAX ||\
                               v == (type)PY_SSIZE_T_MAX)))  )
#if defined (__cplusplus) && __cplusplus >= 201103L
    #include <cstdlib>
    #define __Pyx_sst_abs(value) std::abs(value)
#elif SIZEOF_INT >= SIZEOF_SIZE_T
    #define __Pyx_sst_abs(value) abs(value)
#elif SIZEOF_LONG >= SIZEOF_SIZE_T
    #define __Pyx_sst_abs(value) labs(value)
#elif defined (_MSC_VER) && defined (_M_X64)
    #define __Pyx_sst_abs(value) _abs64(value)
#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
    #define __Pyx_sst_abs(value) llabs(value)
#elif defined (__GNUC__)
    #define __Pyx_sst_abs(value) __builtin_llabs(value)
#else
    #define __Pyx_sst_abs(value) ((value<0) ? -value : value)
#endif
static CYTHON_INLINE char* __Pyx_PyObject_AsString(PyObject*);
static CYTHON_INLINE char* __Pyx_PyObject_AsStringAndSize(PyObject*, Py_ssize_t* length);
#define __Pyx_PyByteArray_FromString(s) PyByteArray_FromStringAndSize((const char*)s, strlen((const char*)s))
#define __Pyx_PyByteArray_FromStringAndSize(s, l) PyByteArray_FromStringAndSize((const char*)s, l)
#define __Pyx_PyBytes_FromString        PyBytes_FromString
#define __Pyx_PyBytes_FromStringAndSize PyBytes_FromStringAndSize
static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char*);
#if PY_MAJOR_VERSION < 3
    #define __Pyx_PyStr_FromString        __Pyx_PyBytes_FromString
    #define __Pyx_PyStr_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
#else
    #define __Pyx_PyStr_FromString        __Pyx_PyUnicode_FromString
    #define __Pyx_PyStr_FromStringAndSize __Pyx_PyUnicode_FromStringAndSize
#endif
#define __Pyx_PyObject_AsSString(s)    ((signed char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_AsUString(s)    ((unsigned char*) __Pyx_PyObject_AsString(s))
#define __Pyx_PyObject_FromCString(s)  __Pyx_PyObject_FromString((const char*)s)
#define __Pyx_PyBytes_FromCString(s)   __Pyx_PyBytes_FromString((const char*)s)
#define __Pyx_PyByteArray_FromCString(s)   __Pyx_PyByteArray_FromString((const char*)s)
#define __Pyx_PyStr_FromCString(s)     __Pyx_PyStr_FromString((const char*)s)
#define __Pyx_PyUnicode_FromCString(s) __Pyx_PyUnicode_FromString((const char*)s)
#if PY_MAJOR_VERSION < 3
static CYTHON_INLINE size_t __Pyx_Py_UNICODE_strlen(const Py_UNICODE *u)
{
    const Py_UNICODE *u_end = u;
    while (*u_end++) ;
    return (size_t)(u_end - u - 1);
}
#else
#define __Pyx_Py_UNICODE_strlen Py_UNICODE_strlen
#endif
#define __Pyx_PyUnicode_FromUnicode(u)       PyUnicode_FromUnicode(u, __Pyx_Py_UNICODE_strlen(u))
#define __Pyx_PyUnicode_FromUnicodeAndLength PyUnicode_FromUnicode
#define __Pyx_PyUnicode_AsUnicode            PyUnicode_AsUnicode
#define __Pyx_NewRef(obj) (Py_INCREF(obj), obj)
#define __Pyx_Owned_Py_None(b) __Pyx_NewRef(Py_None)
#define __Pyx_PyBool_FromLong(b) ((b) ? __Pyx_NewRef(Py_True) : __Pyx_NewRef(Py_False))
static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject*);
static CYTHON_INLINE PyObject* __Pyx_PyNumber_Int(PyObject* x);
static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject*);
static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t);
#if CYTHON_COMPILING_IN_CPYTHON
#define __pyx_PyFloat_AsDouble(x) (PyFloat_CheckExact(x) ? PyFloat_AS_DOUBLE(x) : PyFloat_AsDouble(x))
#else
#define __pyx_PyFloat_AsDouble(x) PyFloat_AsDouble(x)
#endif
#define __pyx_PyFloat_AsFloat(x) ((float) __pyx_PyFloat_AsDouble(x))
#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
static int __Pyx_sys_getdefaultencoding_not_ascii;
static int __Pyx_init_sys_getdefaultencoding_params(void) {
    PyObject* sys;
    PyObject* default_encoding = NULL;
    PyObject* ascii_chars_u = NULL;
    PyObject* ascii_chars_b = NULL;
    const char* default_encoding_c;
    sys = PyImport_ImportModule("sys");
    if (!sys) goto bad;
    default_encoding = PyObject_CallMethod(sys, (char*) "getdefaultencoding", NULL);
    Py_DECREF(sys);
    if (!default_encoding) goto bad;
    default_encoding_c = PyBytes_AsString(default_encoding);
    if (!default_encoding_c) goto bad;
    if (strcmp(default_encoding_c, "ascii") == 0) {
        __Pyx_sys_getdefaultencoding_not_ascii = 0;
    } else {
        char ascii_chars[128];
        int c;
        for (c = 0; c < 128; c++) {
            ascii_chars[c] = c;
        }
        __Pyx_sys_getdefaultencoding_not_ascii = 1;
        ascii_chars_u = PyUnicode_DecodeASCII(ascii_chars, 128, NULL);
        if (!ascii_chars_u) goto bad;
        ascii_chars_b = PyUnicode_AsEncodedString(ascii_chars_u, default_encoding_c, NULL);
        if (!ascii_chars_b || !PyBytes_Check(ascii_chars_b) || memcmp(ascii_chars, PyBytes_AS_STRING(ascii_chars_b), 128) != 0) {
            PyErr_Format(
                PyExc_ValueError,
                "This module compiled with c_string_encoding=ascii, but default encoding '%.200s' is not a superset of ascii.",
                default_encoding_c);
            goto bad;
        }
        Py_DECREF(ascii_chars_u);
        Py_DECREF(ascii_chars_b);
    }
    Py_DECREF(default_encoding);
    return 0;
bad:
    Py_XDECREF(default_encoding);
    Py_XDECREF(ascii_chars_u);
    Py_XDECREF(ascii_chars_b);
    return -1;
}
#endif
#if __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT && PY_MAJOR_VERSION >= 3
#define __Pyx_PyUnicode_FromStringAndSize(c_str, size) PyUnicode_DecodeUTF8(c_str, size, NULL)
#else
#define __Pyx_PyUnicode_FromStringAndSize(c_str, size) PyUnicode_Decode(c_str, size, __PYX_DEFAULT_STRING_ENCODING, NULL)
#if __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
static char* __PYX_DEFAULT_STRING_ENCODING;
static int __Pyx_init_sys_getdefaultencoding_params(void) {
    PyObject* sys;
    PyObject* default_encoding = NULL;
    char* default_encoding_c;
    sys = PyImport_ImportModule("sys");
    if (!sys) goto bad;
    default_encoding = PyObject_CallMethod(sys, (char*) (const char*) "getdefaultencoding", NULL);
    Py_DECREF(sys);
    if (!default_encoding) goto bad;
    default_encoding_c = PyBytes_AsString(default_encoding);
    if (!default_encoding_c) goto bad;
    __PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c));
    if (!__PYX_DEFAULT_STRING_ENCODING) goto bad;
    strcpy(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c);
    Py_DECREF(default_encoding);
    return 0;
bad:
    Py_XDECREF(default_encoding);
    return -1;
}
#endif
#endif


/* Test for GCC > 2.95 */
#if defined(__GNUC__)     && (__GNUC__ > 2 || (__GNUC__ == 2 && (__GNUC_MINOR__ > 95)))
  #define likely(x)   __builtin_expect(!!(x), 1)
  #define unlikely(x) __builtin_expect(!!(x), 0)
#else /* !__GNUC__ or GCC < 2.95 */
  #define likely(x)   (x)
  #define unlikely(x) (x)
#endif /* __GNUC__ */

static PyObject *__pyx_m;
static PyObject *__pyx_d;
static PyObject *__pyx_b;
static PyObject *__pyx_empty_tuple;
static PyObject *__pyx_empty_bytes;
static int __pyx_lineno;
static int __pyx_clineno = 0;
static const char * __pyx_cfilenm= __FILE__;
static const char *__pyx_filename;

#if !defined(CYTHON_CCOMPLEX)
  #if defined(__cplusplus)
    #define CYTHON_CCOMPLEX 1
  #elif defined(_Complex_I)
    #define CYTHON_CCOMPLEX 1
  #else
    #define CYTHON_CCOMPLEX 0
  #endif
#endif
#if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    #include <complex>
  #else
    #include <complex.h>
  #endif
#endif
#if CYTHON_CCOMPLEX && !defined(__cplusplus) && defined(__sun__) && defined(__GNUC__)
  #undef _Complex_I
  #define _Complex_I 1.0fj
#endif


static const char *__pyx_f[] = {
  "scipy/sparse/csgraph/_shortest_path.pyx",
  "__init__.pxd",
  "type.pxd",
  "scipy/sparse/csgraph/parameters.pxi",
};
#define IS_UNSIGNED(type) (((type) -1) > 0)
struct __Pyx_StructField_;
#define __PYX_BUF_FLAGS_PACKED_STRUCT (1 << 0)
typedef struct {
  const char* name;
  struct __Pyx_StructField_* fields;
  size_t size;
  size_t arraysize[8];
  int ndim;
  char typegroup;
  char is_unsigned;
  int flags;
} __Pyx_TypeInfo;
typedef struct __Pyx_StructField_ {
  __Pyx_TypeInfo* type;
  const char* name;
  size_t offset;
} __Pyx_StructField;
typedef struct {
  __Pyx_StructField* field;
  size_t parent_offset;
} __Pyx_BufFmt_StackElem;
typedef struct {
  __Pyx_StructField root;
  __Pyx_BufFmt_StackElem* head;
  size_t fmt_offset;
  size_t new_count, enc_count;
  size_t struct_alignment;
  int is_complex;
  char enc_type;
  char new_packmode;
  char enc_packmode;
  char is_valid_array;
} __Pyx_BufFmt_Context;


/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":725
 * # in Cython to enable them only on the right systems.
 * 
 * ctypedef npy_int8       int8_t             # <<<<<<<<<<<<<<
 * ctypedef npy_int16      int16_t
 * ctypedef npy_int32      int32_t
 */
typedef npy_int8 __pyx_t_5numpy_int8_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":726
 * 
 * ctypedef npy_int8       int8_t
 * ctypedef npy_int16      int16_t             # <<<<<<<<<<<<<<
 * ctypedef npy_int32      int32_t
 * ctypedef npy_int64      int64_t
 */
typedef npy_int16 __pyx_t_5numpy_int16_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":727
 * ctypedef npy_int8       int8_t
 * ctypedef npy_int16      int16_t
 * ctypedef npy_int32      int32_t             # <<<<<<<<<<<<<<
 * ctypedef npy_int64      int64_t
 * #ctypedef npy_int96      int96_t
 */
typedef npy_int32 __pyx_t_5numpy_int32_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":728
 * ctypedef npy_int16      int16_t
 * ctypedef npy_int32      int32_t
 * ctypedef npy_int64      int64_t             # <<<<<<<<<<<<<<
 * #ctypedef npy_int96      int96_t
 * #ctypedef npy_int128     int128_t
 */
typedef npy_int64 __pyx_t_5numpy_int64_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":732
 * #ctypedef npy_int128     int128_t
 * 
 * ctypedef npy_uint8      uint8_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uint16     uint16_t
 * ctypedef npy_uint32     uint32_t
 */
typedef npy_uint8 __pyx_t_5numpy_uint8_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":733
 * 
 * ctypedef npy_uint8      uint8_t
 * ctypedef npy_uint16     uint16_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uint32     uint32_t
 * ctypedef npy_uint64     uint64_t
 */
typedef npy_uint16 __pyx_t_5numpy_uint16_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":734
 * ctypedef npy_uint8      uint8_t
 * ctypedef npy_uint16     uint16_t
 * ctypedef npy_uint32     uint32_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uint64     uint64_t
 * #ctypedef npy_uint96     uint96_t
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typedef npy_uint32 __pyx_t_5numpy_uint32_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":735
 * ctypedef npy_uint16     uint16_t
 * ctypedef npy_uint32     uint32_t
 * ctypedef npy_uint64     uint64_t             # <<<<<<<<<<<<<<
 * #ctypedef npy_uint96     uint96_t
 * #ctypedef npy_uint128    uint128_t
 */
typedef npy_uint64 __pyx_t_5numpy_uint64_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":739
 * #ctypedef npy_uint128    uint128_t
 * 
 * ctypedef npy_float32    float32_t             # <<<<<<<<<<<<<<
 * ctypedef npy_float64    float64_t
 * #ctypedef npy_float80    float80_t
 */
typedef npy_float32 __pyx_t_5numpy_float32_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":740
 * 
 * ctypedef npy_float32    float32_t
 * ctypedef npy_float64    float64_t             # <<<<<<<<<<<<<<
 * #ctypedef npy_float80    float80_t
 * #ctypedef npy_float128   float128_t
 */
typedef npy_float64 __pyx_t_5numpy_float64_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":749
 * # The int types are mapped a bit surprising --
 * # numpy.int corresponds to 'l' and numpy.long to 'q'
 * ctypedef npy_long       int_t             # <<<<<<<<<<<<<<
 * ctypedef npy_longlong   long_t
 * ctypedef npy_longlong   longlong_t
 */
typedef npy_long __pyx_t_5numpy_int_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":750
 * # numpy.int corresponds to 'l' and numpy.long to 'q'
 * ctypedef npy_long       int_t
 * ctypedef npy_longlong   long_t             # <<<<<<<<<<<<<<
 * ctypedef npy_longlong   longlong_t
 * 
 */
typedef npy_longlong __pyx_t_5numpy_long_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":751
 * ctypedef npy_long       int_t
 * ctypedef npy_longlong   long_t
 * ctypedef npy_longlong   longlong_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_ulong      uint_t
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typedef npy_longlong __pyx_t_5numpy_longlong_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":753
 * ctypedef npy_longlong   longlong_t
 * 
 * ctypedef npy_ulong      uint_t             # <<<<<<<<<<<<<<
 * ctypedef npy_ulonglong  ulong_t
 * ctypedef npy_ulonglong  ulonglong_t
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typedef npy_ulong __pyx_t_5numpy_uint_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":754
 * 
 * ctypedef npy_ulong      uint_t
 * ctypedef npy_ulonglong  ulong_t             # <<<<<<<<<<<<<<
 * ctypedef npy_ulonglong  ulonglong_t
 * 
 */
typedef npy_ulonglong __pyx_t_5numpy_ulong_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":755
 * ctypedef npy_ulong      uint_t
 * ctypedef npy_ulonglong  ulong_t
 * ctypedef npy_ulonglong  ulonglong_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_intp       intp_t
 */
typedef npy_ulonglong __pyx_t_5numpy_ulonglong_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":757
 * ctypedef npy_ulonglong  ulonglong_t
 * 
 * ctypedef npy_intp       intp_t             # <<<<<<<<<<<<<<
 * ctypedef npy_uintp      uintp_t
 * 
 */
typedef npy_intp __pyx_t_5numpy_intp_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":758
 * 
 * ctypedef npy_intp       intp_t
 * ctypedef npy_uintp      uintp_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_double     float_t
 */
typedef npy_uintp __pyx_t_5numpy_uintp_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":760
 * ctypedef npy_uintp      uintp_t
 * 
 * ctypedef npy_double     float_t             # <<<<<<<<<<<<<<
 * ctypedef npy_double     double_t
 * ctypedef npy_longdouble longdouble_t
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typedef npy_double __pyx_t_5numpy_float_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":761
 * 
 * ctypedef npy_double     float_t
 * ctypedef npy_double     double_t             # <<<<<<<<<<<<<<
 * ctypedef npy_longdouble longdouble_t
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 */
typedef npy_double __pyx_t_5numpy_double_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":762
 * ctypedef npy_double     float_t
 * ctypedef npy_double     double_t
 * ctypedef npy_longdouble longdouble_t             # <<<<<<<<<<<<<<
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 * ctypedef npy_cfloat      cfloat_t
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typedef npy_longdouble __pyx_t_5numpy_longdouble_t;

/* "parameters.pxi":3
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typedef __pyx_t_5numpy_float64_t __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t;

/* "parameters.pxi":6
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#if CYTHON_CCOMPLEX
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    typedef double _Complex __pyx_t_double_complex;
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/*--- Type declarations ---*/

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":764
 * ctypedef npy_longdouble longdouble_t
 * 
 * ctypedef npy_cfloat      cfloat_t             # <<<<<<<<<<<<<<
 * ctypedef npy_cdouble     cdouble_t
 * ctypedef npy_clongdouble clongdouble_t
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typedef npy_cfloat __pyx_t_5numpy_cfloat_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":765
 * 
 * ctypedef npy_cfloat      cfloat_t
 * ctypedef npy_cdouble     cdouble_t             # <<<<<<<<<<<<<<
 * ctypedef npy_clongdouble clongdouble_t
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 */
typedef npy_cdouble __pyx_t_5numpy_cdouble_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":766
 * ctypedef npy_cfloat      cfloat_t
 * ctypedef npy_cdouble     cdouble_t
 * ctypedef npy_clongdouble clongdouble_t             # <<<<<<<<<<<<<<
 * 
 * ctypedef npy_cdouble     complex_t
 */
typedef npy_clongdouble __pyx_t_5numpy_clongdouble_t;

/* "../../../../../virtualenvs/scipy_py27/local/lib/python2.7/site-packages/Cython/Includes/numpy/__init__.pxd":768
 * ctypedef npy_clongdouble clongdouble_t
 * 
 * ctypedef npy_cdouble     complex_t             # <<<<<<<<<<<<<<
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 */
typedef npy_cdouble __pyx_t_5numpy_complex_t;
struct __pyx_opt_args_5scipy_6sparse_7csgraph_14_shortest_path__floyd_warshall;
struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode;
struct __pyx_opt_args_5scipy_6sparse_7csgraph_14_shortest_path_initialize_node;
struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap;

/* "scipy/sparse/csgraph/_shortest_path.pyx":1066
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enum __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciState {
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/* "scipy/sparse/csgraph/_shortest_path.pyx":261
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 */
struct __pyx_opt_args_5scipy_6sparse_7csgraph_14_shortest_path__floyd_warshall {
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  int directed;
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/* "scipy/sparse/csgraph/_shortest_path.pyx":1072
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 * 
 * cdef struct FibonacciNode:             # <<<<<<<<<<<<<<
 *     unsigned int index
 *     unsigned int rank
 */
struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode {
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  unsigned int rank;
  enum __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciState state;
  __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t val;
  struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *parent;
  struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *left_sibling;
  struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *right_sibling;
  struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *children;
};

/* "scipy/sparse/csgraph/_shortest_path.pyx":1083
 * 
 * 
 * cdef void initialize_node(FibonacciNode* node,             # <<<<<<<<<<<<<<
 *                           unsigned int index,
 *                           DTYPE_t val=0):
 */
struct __pyx_opt_args_5scipy_6sparse_7csgraph_14_shortest_path_initialize_node {
  int __pyx_n;
  __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t val;
};

/* "scipy/sparse/csgraph/_shortest_path.pyx":1169
 * #  routines to implement a Fibonacci heap
 * 
 * ctypedef FibonacciNode* pFibonacciNode             # <<<<<<<<<<<<<<
 * 
 * 
 */
typedef struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_pFibonacciNode;

/* "scipy/sparse/csgraph/_shortest_path.pyx":1172
 * 
 * 
 * cdef struct FibonacciHeap:             # <<<<<<<<<<<<<<
 *     FibonacciNode* min_node
 *     pFibonacciNode[100] roots_by_rank  # maximum number of nodes is ~2^100.
 */
struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap {
  struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *min_node;
  __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_pFibonacciNode roots_by_rank[0x64];
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static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject* attr_name) {
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static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[],\
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static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
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#if CYTHON_COMPILING_IN_CPYTHON
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static CYTHON_INLINE PyObject *__Pyx_GetModuleGlobalName(PyObject *name);

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static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int equals);

static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals);

#if PY_MAJOR_VERSION >= 3
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#define __Pyx_GetItemInt(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck)\
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#define __Pyx_GetItemInt_List(o, i, type, is_signed, to_py_func, is_list, wraparound, boundscheck)\
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static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j);
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static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value);

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/* Module declarations from 'cpython.buffer' */

/* Module declarations from 'libc.string' */

/* Module declarations from 'libc.stdio' */

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/* Module declarations from 'cython' */

/* Module declarations from 'numpy.math' */

/* Module declarations from 'scipy.sparse.csgraph._shortest_path' */
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__floyd_warshall(PyArrayObject *, PyArrayObject *, struct __pyx_opt_args_5scipy_6sparse_7csgraph_14_shortest_path__floyd_warshall *__pyx_optional_args); /*proto*/
static PyObject *__pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__dijkstra_directed(PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t); /*proto*/
static PyObject *__pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__dijkstra_undirected(PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t); /*proto*/
static int __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__bellman_ford_directed(PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *); /*proto*/
static int __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__bellman_ford_undirected(PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__johnson_add_weights(PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *); /*proto*/
static int __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__johnson_directed(PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *); /*proto*/
static int __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path__johnson_undirected(PyArrayObject *, PyArrayObject *, PyArrayObject *, PyArrayObject *); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_initialize_node(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *, unsigned int, struct __pyx_opt_args_5scipy_6sparse_7csgraph_14_shortest_path_initialize_node *__pyx_optional_args); /*proto*/
static struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *__pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_rightmost_sibling(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *); /*proto*/
static struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *__pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_leftmost_sibling(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_add_child(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_add_sibling(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_remove(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_insert_node(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap *, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_decrease_val(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap *, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *, __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t); /*proto*/
static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_link(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap *, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *); /*proto*/
static struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *__pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_remove_min(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap *); /*proto*/
static __Pyx_TypeInfo __Pyx_TypeInfo_nn___pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t = { "DTYPE_t", NULL, sizeof(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t), { 0 }, 0, 'R', 0, 0 };
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#define __Pyx_MODULE_NAME "scipy.sparse.csgraph._shortest_path"
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static char __pyx_k_int32[] = "int32";
static char __pyx_k_isinf[] = "isinf";
static char __pyx_k_limit[] = "limit";
static char __pyx_k_numpy[] = "numpy";
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static char __pyx_k_float64[] = "float64";
static char __pyx_k_indices[] = "indices";
static char __pyx_k_johnson[] = "johnson";
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static char __pyx_k_reshape[] = "reshape";
static char __pyx_k_csgraphT[] = "csgraphT";
static char __pyx_k_csr_data[] = "csr_data";
static char __pyx_k_diagonal[] = "diagonal";
static char __pyx_k_dijkstra[] = "dijkstra";
static char __pyx_k_directed[] = "directed";
static char __pyx_k_issparse[] = "issparse";
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  /* "scipy/sparse/csgraph/_shortest_path.pyx":261
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/* "scipy/sparse/csgraph/_shortest_path.pyx":334
 * 
 * 
 * def dijkstra(csgraph, directed=True, indices=None,             # <<<<<<<<<<<<<<
 *              return_predecessors=False,
 *              unweighted=False, limit=np.inf):
 */

/* Python wrapper */
static PyObject *__pyx_pw_5scipy_6sparse_7csgraph_14_shortest_path_5dijkstra(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static char __pyx_doc_5scipy_6sparse_7csgraph_14_shortest_path_4dijkstra[] = "\n    dijkstra(csgraph, directed=True, indices=None, return_predecessors=False,\n             unweighted=False, limit=np.inf)\n\n    Dijkstra algorithm using Fibonacci Heaps\n\n    .. versionadded:: 0.11.0\n\n    Parameters\n    ----------\n    csgraph : array, matrix, or sparse matrix, 2 dimensions\n        The N x N array of non-negative distances representing the input graph.\n    directed : bool, optional\n        If True (default), then find the shortest path on a directed graph:\n        only move from point i to point j along paths csgraph[i, j].\n        If False, then find the shortest path on an undirected graph: the\n        algorithm can progress from point i to j along csgraph[i, j] or\n        csgraph[j, i]\n    indices : array_like or int, optional\n        if specified, only compute the paths for the points at the given\n        indices.\n    return_predecessors : bool, optional\n        If True, return the size (N, N) predecesor matrix\n    unweighted : bool, optional\n        If True, then find unweighted distances.  That is, rather than finding\n        the path between each point such that the sum of weights is minimized,\n        find the path such that the number of edges is minimized.\n    limit : float, optional\n        The maximum distance to calculate, must be >= 0. Using a smaller limit\n        will decrease computation time by aborting calculations between pairs\n        that are separated by a distance > limit. For such pairs, the distance\n        will be equal to np.inf (i.e., not connected).\n\n        .. versionadded:: 0.14.0\n\n    Returns\n    -------\n    dist_matrix : ndarray\n        The matrix of distances between graph nodes. dist_matrix[i,j]\n        gives the shortest distance from point i to point j along the graph.\n\n    predecessors : ndarray\n        Returned only if return_predecessors == True.\n        The matrix of predecessors, which can be used to reconstruct\n        the shortest paths.  Row i of the predecessor"" matrix contains\n        information on the shortest paths from point i: each entry\n        predecessors[i, j] gives the index of the previous node in the\n        path from point i to point j.  If no path exists between point\n        i and j, then predecessors[i, j] = -9999\n\n    Notes\n    -----\n    As currently implemented, Dijkstra's algorithm does not work for\n    graphs with direction-dependent distances when directed == False.\n    i.e., if csgraph[i,j] and csgraph[j,i] are not equal and\n    both are nonzero, setting directed=False will not yield the correct\n    result.\n\n    Also, this routine does not work for graphs with negative\n    distances.  Negative distances can lead to infinite cycles that must\n    be handled by specialized algorithms such as Bellman-Ford's algorithm\n    or Johnson's algorithm.\n    ";
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      __Pyx_RaiseBufferIndexError(__pyx_t_3);
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    __pyx_v_j_source = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_source_indices.rcbuffer->pybuffer.buf, __pyx_t_5, __pyx_pybuffernd_source_indices.diminfo[0].strides));

    /* "scipy/sparse/csgraph/_shortest_path.pyx":496
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 */
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      /* "scipy/sparse/csgraph/_shortest_path.pyx":497
 * 
 *         for k from 0 <= k < N:
 *             initialize_node(&nodes[k], k)             # <<<<<<<<<<<<<<
 * 
 *         dist_matrix[i, j_source] = 0
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      __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_initialize_node((&(__pyx_v_nodes[__pyx_v_k])), __pyx_v_k, NULL);
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    /* "scipy/sparse/csgraph/_shortest_path.pyx":499
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 * 
 *         dist_matrix[i, j_source] = 0             # <<<<<<<<<<<<<<
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      __Pyx_RaiseBufferIndexError(__pyx_t_3);
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    *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_dist_matrix.rcbuffer->pybuffer.buf, __pyx_t_7, __pyx_pybuffernd_dist_matrix.diminfo[0].strides, __pyx_t_8, __pyx_pybuffernd_dist_matrix.diminfo[1].strides) = 0.0;

    /* "scipy/sparse/csgraph/_shortest_path.pyx":500
 * 
 *         dist_matrix[i, j_source] = 0
 *         heap.min_node = NULL             # <<<<<<<<<<<<<<
 *         insert_node(&heap, &nodes[j_source])
 * 
 */
    __pyx_v_heap.min_node = NULL;

    /* "scipy/sparse/csgraph/_shortest_path.pyx":501
 *         dist_matrix[i, j_source] = 0
 *         heap.min_node = NULL
 *         insert_node(&heap, &nodes[j_source])             # <<<<<<<<<<<<<<
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 *         while heap.min_node:
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    __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_insert_node((&__pyx_v_heap), (&(__pyx_v_nodes[__pyx_v_j_source])));

    /* "scipy/sparse/csgraph/_shortest_path.pyx":503
 *         insert_node(&heap, &nodes[j_source])
 * 
 *         while heap.min_node:             # <<<<<<<<<<<<<<
 *             v = remove_min(&heap)
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      /* "scipy/sparse/csgraph/_shortest_path.pyx":504
 * 
 *         while heap.min_node:
 *             v = remove_min(&heap)             # <<<<<<<<<<<<<<
 *             v.state = SCANNED
 * 
 */
      __pyx_v_v = __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_remove_min((&__pyx_v_heap));

      /* "scipy/sparse/csgraph/_shortest_path.pyx":505
 *         while heap.min_node:
 *             v = remove_min(&heap)
 *             v.state = SCANNED             # <<<<<<<<<<<<<<
 * 
 *             for j from csr_indptr[v.index] <= j < csr_indptr[v.index + 1]:
 */
      __pyx_v_v->state = __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_SCANNED;

      /* "scipy/sparse/csgraph/_shortest_path.pyx":507
 *             v.state = SCANNED
 * 
 *             for j from csr_indptr[v.index] <= j < csr_indptr[v.index + 1]:             # <<<<<<<<<<<<<<
 *                 j_current = csr_indices[j]
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      __pyx_t_10 = __pyx_v_v->index;
      __pyx_t_3 = -1;
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        __Pyx_RaiseBufferIndexError(__pyx_t_3);
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      __pyx_t_11 = (__pyx_v_v->index + 1);
      __pyx_t_3 = -1;
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        __pyx_t_11 += __pyx_pybuffernd_csr_indptr.diminfo[0].shape;
        if (unlikely(__pyx_t_11 < 0)) __pyx_t_3 = 0;
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        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 507; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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      __pyx_t_12 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indptr.rcbuffer->pybuffer.buf, __pyx_t_11, __pyx_pybuffernd_csr_indptr.diminfo[0].strides));
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        /* "scipy/sparse/csgraph/_shortest_path.pyx":508
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          __Pyx_RaiseBufferIndexError(__pyx_t_3);
          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 508; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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        /* "scipy/sparse/csgraph/_shortest_path.pyx":509
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 *                 j_current = csr_indices[j]
 *                 current_node = &nodes[j_current]             # <<<<<<<<<<<<<<
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        /* "scipy/sparse/csgraph/_shortest_path.pyx":510
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          /* "scipy/sparse/csgraph/_shortest_path.pyx":511
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          __pyx_v_next_val = (__pyx_v_v->val + (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_csr_weights.rcbuffer->pybuffer.buf, __pyx_t_14, __pyx_pybuffernd_csr_weights.diminfo[0].strides)));

          /* "scipy/sparse/csgraph/_shortest_path.pyx":512
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 *                         if current_node.state == NOT_IN_HEAP:
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          __pyx_t_9 = ((__pyx_v_next_val <= __pyx_v_limit) != 0);
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            /* "scipy/sparse/csgraph/_shortest_path.pyx":513
 *                     next_val = v.val + csr_weights[j]
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 *                         if current_node.state == NOT_IN_HEAP:             # <<<<<<<<<<<<<<
 *                             current_node.state = IN_HEAP
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 */
            __pyx_t_9 = ((__pyx_v_current_node->state == __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_NOT_IN_HEAP) != 0);
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              /* "scipy/sparse/csgraph/_shortest_path.pyx":514
 *                     if next_val <= limit:
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 *                             current_node.state = IN_HEAP             # <<<<<<<<<<<<<<
 *                             current_node.val = next_val
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              __pyx_v_current_node->state = __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_IN_HEAP;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":515
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val             # <<<<<<<<<<<<<<
 *                             insert_node(&heap, current_node)
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 */
              __pyx_v_current_node->val = __pyx_v_next_val;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":516
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)             # <<<<<<<<<<<<<<
 *                             if return_pred:
 *                                 pred[i, j_current] = v.index
 */
              __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_insert_node((&__pyx_v_heap), __pyx_v_current_node);

              /* "scipy/sparse/csgraph/_shortest_path.pyx":517
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)
 *                             if return_pred:             # <<<<<<<<<<<<<<
 *                                 pred[i, j_current] = v.index
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 */
              __pyx_t_9 = (__pyx_v_return_pred != 0);
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                /* "scipy/sparse/csgraph/_shortest_path.pyx":518
 *                             insert_node(&heap, current_node)
 *                             if return_pred:
 *                                 pred[i, j_current] = v.index             # <<<<<<<<<<<<<<
 *                         elif current_node.val > next_val:
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                __pyx_t_6 = __pyx_v_v->index;
                __pyx_t_15 = __pyx_v_i;
                __pyx_t_16 = __pyx_v_j_current;
                __pyx_t_3 = -1;
                if (unlikely(__pyx_t_15 >= (size_t)__pyx_pybuffernd_pred.diminfo[0].shape)) __pyx_t_3 = 0;
                if (unlikely(__pyx_t_16 >= (size_t)__pyx_pybuffernd_pred.diminfo[1].shape)) __pyx_t_3 = 1;
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                  __Pyx_RaiseBufferIndexError(__pyx_t_3);
                  {__pyx_filename = __pyx_f[0]; __pyx_lineno = 518; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_pred.rcbuffer->pybuffer.buf, __pyx_t_15, __pyx_pybuffernd_pred.diminfo[0].strides, __pyx_t_16, __pyx_pybuffernd_pred.diminfo[1].strides) = __pyx_t_6;

                /* "scipy/sparse/csgraph/_shortest_path.pyx":517
 *                             current_node.val = next_val
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 *                                 pred[i, j_current] = v.index
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 */
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              /* "scipy/sparse/csgraph/_shortest_path.pyx":513
 *                     next_val = v.val + csr_weights[j]
 *                     if next_val <= limit:
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              goto __pyx_L13;
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            /* "scipy/sparse/csgraph/_shortest_path.pyx":519
 *                             if return_pred:
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            __pyx_t_9 = ((__pyx_v_current_node->val > __pyx_v_next_val) != 0);
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              /* "scipy/sparse/csgraph/_shortest_path.pyx":520
 *                                 pred[i, j_current] = v.index
 *                         elif current_node.val > next_val:
 *                             decrease_val(&heap, current_node,             # <<<<<<<<<<<<<<
 *                                          next_val)
 *                             if return_pred:
 */
              __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_decrease_val((&__pyx_v_heap), __pyx_v_current_node, __pyx_v_next_val);

              /* "scipy/sparse/csgraph/_shortest_path.pyx":522
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 */
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                /* "scipy/sparse/csgraph/_shortest_path.pyx":523
 *                                          next_val)
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                  __Pyx_RaiseBufferIndexError(__pyx_t_3);
                  {__pyx_filename = __pyx_f[0]; __pyx_lineno = 523; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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                *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_pred.rcbuffer->pybuffer.buf, __pyx_t_17, __pyx_pybuffernd_pred.diminfo[0].strides, __pyx_t_18, __pyx_pybuffernd_pred.diminfo[1].strides) = __pyx_t_6;

                /* "scipy/sparse/csgraph/_shortest_path.pyx":522
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 */
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          /* "scipy/sparse/csgraph/_shortest_path.pyx":510
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 */
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 *             v = remove_min(&heap)
 *             v.state = SCANNED             # <<<<<<<<<<<<<<
 * 
 *             for j from csr_indptr[v.index] <= j < csr_indptr[v.index + 1]:
 */
      __pyx_v_v->state = __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_SCANNED;

      /* "scipy/sparse/csgraph/_shortest_path.pyx":571
 *             v.state = SCANNED
 * 
 *             for j from csr_indptr[v.index] <= j < csr_indptr[v.index + 1]:             # <<<<<<<<<<<<<<
 *                 j_current = csr_indices[j]
 *                 current_node = &nodes[j_current]
 */
      __pyx_t_10 = __pyx_v_v->index;
      __pyx_t_3 = -1;
      if (unlikely(__pyx_t_10 >= (size_t)__pyx_pybuffernd_csr_indptr.diminfo[0].shape)) __pyx_t_3 = 0;
      if (unlikely(__pyx_t_3 != -1)) {
        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 571; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
      }
      __pyx_t_11 = (__pyx_v_v->index + 1);
      __pyx_t_3 = -1;
      if (__pyx_t_11 < 0) {
        __pyx_t_11 += __pyx_pybuffernd_csr_indptr.diminfo[0].shape;
        if (unlikely(__pyx_t_11 < 0)) __pyx_t_3 = 0;
      } else if (unlikely(__pyx_t_11 >= __pyx_pybuffernd_csr_indptr.diminfo[0].shape)) __pyx_t_3 = 0;
      if (unlikely(__pyx_t_3 != -1)) {
        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 571; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
      }
      __pyx_t_12 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indptr.rcbuffer->pybuffer.buf, __pyx_t_11, __pyx_pybuffernd_csr_indptr.diminfo[0].strides));
      for (__pyx_v_j = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indptr.rcbuffer->pybuffer.buf, __pyx_t_10, __pyx_pybuffernd_csr_indptr.diminfo[0].strides)); __pyx_v_j < __pyx_t_12; __pyx_v_j++) {

        /* "scipy/sparse/csgraph/_shortest_path.pyx":572
 * 
 *             for j from csr_indptr[v.index] <= j < csr_indptr[v.index + 1]:
 *                 j_current = csr_indices[j]             # <<<<<<<<<<<<<<
 *                 current_node = &nodes[j_current]
 *                 if current_node.state != SCANNED:
 */
        __pyx_t_13 = __pyx_v_j;
        __pyx_t_3 = -1;
        if (__pyx_t_13 < 0) {
          __pyx_t_13 += __pyx_pybuffernd_csr_indices.diminfo[0].shape;
          if (unlikely(__pyx_t_13 < 0)) __pyx_t_3 = 0;
        } else if (unlikely(__pyx_t_13 >= __pyx_pybuffernd_csr_indices.diminfo[0].shape)) __pyx_t_3 = 0;
        if (unlikely(__pyx_t_3 != -1)) {
          __Pyx_RaiseBufferIndexError(__pyx_t_3);
          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 572; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
        }
        __pyx_v_j_current = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indices.rcbuffer->pybuffer.buf, __pyx_t_13, __pyx_pybuffernd_csr_indices.diminfo[0].strides));

        /* "scipy/sparse/csgraph/_shortest_path.pyx":573
 *             for j from csr_indptr[v.index] <= j < csr_indptr[v.index + 1]:
 *                 j_current = csr_indices[j]
 *                 current_node = &nodes[j_current]             # <<<<<<<<<<<<<<
 *                 if current_node.state != SCANNED:
 *                     next_val = v.val + csr_weights[j]
 */
        __pyx_v_current_node = (&(__pyx_v_nodes[__pyx_v_j_current]));

        /* "scipy/sparse/csgraph/_shortest_path.pyx":574
 *                 j_current = csr_indices[j]
 *                 current_node = &nodes[j_current]
 *                 if current_node.state != SCANNED:             # <<<<<<<<<<<<<<
 *                     next_val = v.val + csr_weights[j]
 *                     if next_val <= limit:
 */
        __pyx_t_9 = ((__pyx_v_current_node->state != __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_SCANNED) != 0);
        if (__pyx_t_9) {

          /* "scipy/sparse/csgraph/_shortest_path.pyx":575
 *                 current_node = &nodes[j_current]
 *                 if current_node.state != SCANNED:
 *                     next_val = v.val + csr_weights[j]             # <<<<<<<<<<<<<<
 *                     if next_val <= limit:
 *                         if current_node.state == NOT_IN_HEAP:
 */
          __pyx_t_14 = __pyx_v_j;
          __pyx_t_3 = -1;
          if (__pyx_t_14 < 0) {
            __pyx_t_14 += __pyx_pybuffernd_csr_weights.diminfo[0].shape;
            if (unlikely(__pyx_t_14 < 0)) __pyx_t_3 = 0;
          } else if (unlikely(__pyx_t_14 >= __pyx_pybuffernd_csr_weights.diminfo[0].shape)) __pyx_t_3 = 0;
          if (unlikely(__pyx_t_3 != -1)) {
            __Pyx_RaiseBufferIndexError(__pyx_t_3);
            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 575; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
          }
          __pyx_v_next_val = (__pyx_v_v->val + (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_csr_weights.rcbuffer->pybuffer.buf, __pyx_t_14, __pyx_pybuffernd_csr_weights.diminfo[0].strides)));

          /* "scipy/sparse/csgraph/_shortest_path.pyx":576
 *                 if current_node.state != SCANNED:
 *                     next_val = v.val + csr_weights[j]
 *                     if next_val <= limit:             # <<<<<<<<<<<<<<
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP
 */
          __pyx_t_9 = ((__pyx_v_next_val <= __pyx_v_limit) != 0);
          if (__pyx_t_9) {

            /* "scipy/sparse/csgraph/_shortest_path.pyx":577
 *                     next_val = v.val + csr_weights[j]
 *                     if next_val <= limit:
 *                         if current_node.state == NOT_IN_HEAP:             # <<<<<<<<<<<<<<
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val
 */
            __pyx_t_9 = ((__pyx_v_current_node->state == __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_NOT_IN_HEAP) != 0);
            if (__pyx_t_9) {

              /* "scipy/sparse/csgraph/_shortest_path.pyx":578
 *                     if next_val <= limit:
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP             # <<<<<<<<<<<<<<
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)
 */
              __pyx_v_current_node->state = __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_IN_HEAP;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":579
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val             # <<<<<<<<<<<<<<
 *                             insert_node(&heap, current_node)
 *                             if return_pred:
 */
              __pyx_v_current_node->val = __pyx_v_next_val;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":580
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)             # <<<<<<<<<<<<<<
 *                             if return_pred:
 *                                 pred[i, j_current] = v.index
 */
              __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_insert_node((&__pyx_v_heap), __pyx_v_current_node);

              /* "scipy/sparse/csgraph/_shortest_path.pyx":581
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)
 *                             if return_pred:             # <<<<<<<<<<<<<<
 *                                 pred[i, j_current] = v.index
 *                         elif current_node.val > next_val:
 */
              __pyx_t_9 = (__pyx_v_return_pred != 0);
              if (__pyx_t_9) {

                /* "scipy/sparse/csgraph/_shortest_path.pyx":582
 *                             insert_node(&heap, current_node)
 *                             if return_pred:
 *                                 pred[i, j_current] = v.index             # <<<<<<<<<<<<<<
 *                         elif current_node.val > next_val:
 *                             decrease_val(&heap, current_node,
 */
                __pyx_t_6 = __pyx_v_v->index;
                __pyx_t_15 = __pyx_v_i;
                __pyx_t_16 = __pyx_v_j_current;
                __pyx_t_3 = -1;
                if (unlikely(__pyx_t_15 >= (size_t)__pyx_pybuffernd_pred.diminfo[0].shape)) __pyx_t_3 = 0;
                if (unlikely(__pyx_t_16 >= (size_t)__pyx_pybuffernd_pred.diminfo[1].shape)) __pyx_t_3 = 1;
                if (unlikely(__pyx_t_3 != -1)) {
                  __Pyx_RaiseBufferIndexError(__pyx_t_3);
                  {__pyx_filename = __pyx_f[0]; __pyx_lineno = 582; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                }
                *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_pred.rcbuffer->pybuffer.buf, __pyx_t_15, __pyx_pybuffernd_pred.diminfo[0].strides, __pyx_t_16, __pyx_pybuffernd_pred.diminfo[1].strides) = __pyx_t_6;

                /* "scipy/sparse/csgraph/_shortest_path.pyx":581
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)
 *                             if return_pred:             # <<<<<<<<<<<<<<
 *                                 pred[i, j_current] = v.index
 *                         elif current_node.val > next_val:
 */
              }

              /* "scipy/sparse/csgraph/_shortest_path.pyx":577
 *                     next_val = v.val + csr_weights[j]
 *                     if next_val <= limit:
 *                         if current_node.state == NOT_IN_HEAP:             # <<<<<<<<<<<<<<
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val
 */
              goto __pyx_L13;
            }

            /* "scipy/sparse/csgraph/_shortest_path.pyx":583
 *                             if return_pred:
 *                                 pred[i, j_current] = v.index
 *                         elif current_node.val > next_val:             # <<<<<<<<<<<<<<
 *                             decrease_val(&heap, current_node,
 *                                          next_val)
 */
            __pyx_t_9 = ((__pyx_v_current_node->val > __pyx_v_next_val) != 0);
            if (__pyx_t_9) {

              /* "scipy/sparse/csgraph/_shortest_path.pyx":584
 *                                 pred[i, j_current] = v.index
 *                         elif current_node.val > next_val:
 *                             decrease_val(&heap, current_node,             # <<<<<<<<<<<<<<
 *                                          next_val)
 *                             if return_pred:
 */
              __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_decrease_val((&__pyx_v_heap), __pyx_v_current_node, __pyx_v_next_val);

              /* "scipy/sparse/csgraph/_shortest_path.pyx":586
 *                             decrease_val(&heap, current_node,
 *                                          next_val)
 *                             if return_pred:             # <<<<<<<<<<<<<<
 *                                 pred[i, j_current] = v.index
 * 
 */
              __pyx_t_9 = (__pyx_v_return_pred != 0);
              if (__pyx_t_9) {

                /* "scipy/sparse/csgraph/_shortest_path.pyx":587
 *                                          next_val)
 *                             if return_pred:
 *                                 pred[i, j_current] = v.index             # <<<<<<<<<<<<<<
 * 
 *             for j from csrT_indptr[v.index] <= j < csrT_indptr[v.index + 1]:
 */
                __pyx_t_6 = __pyx_v_v->index;
                __pyx_t_17 = __pyx_v_i;
                __pyx_t_18 = __pyx_v_j_current;
                __pyx_t_3 = -1;
                if (unlikely(__pyx_t_17 >= (size_t)__pyx_pybuffernd_pred.diminfo[0].shape)) __pyx_t_3 = 0;
                if (unlikely(__pyx_t_18 >= (size_t)__pyx_pybuffernd_pred.diminfo[1].shape)) __pyx_t_3 = 1;
                if (unlikely(__pyx_t_3 != -1)) {
                  __Pyx_RaiseBufferIndexError(__pyx_t_3);
                  {__pyx_filename = __pyx_f[0]; __pyx_lineno = 587; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
                }
                *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_pred.rcbuffer->pybuffer.buf, __pyx_t_17, __pyx_pybuffernd_pred.diminfo[0].strides, __pyx_t_18, __pyx_pybuffernd_pred.diminfo[1].strides) = __pyx_t_6;

                /* "scipy/sparse/csgraph/_shortest_path.pyx":586
 *                             decrease_val(&heap, current_node,
 *                                          next_val)
 *                             if return_pred:             # <<<<<<<<<<<<<<
 *                                 pred[i, j_current] = v.index
 * 
 */
              }

              /* "scipy/sparse/csgraph/_shortest_path.pyx":583
 *                             if return_pred:
 *                                 pred[i, j_current] = v.index
 *                         elif current_node.val > next_val:             # <<<<<<<<<<<<<<
 *                             decrease_val(&heap, current_node,
 *                                          next_val)
 */
            }
            __pyx_L13:;

            /* "scipy/sparse/csgraph/_shortest_path.pyx":576
 *                 if current_node.state != SCANNED:
 *                     next_val = v.val + csr_weights[j]
 *                     if next_val <= limit:             # <<<<<<<<<<<<<<
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP
 */
          }

          /* "scipy/sparse/csgraph/_shortest_path.pyx":574
 *                 j_current = csr_indices[j]
 *                 current_node = &nodes[j_current]
 *                 if current_node.state != SCANNED:             # <<<<<<<<<<<<<<
 *                     next_val = v.val + csr_weights[j]
 *                     if next_val <= limit:
 */
        }
      }

      /* "scipy/sparse/csgraph/_shortest_path.pyx":589
 *                                 pred[i, j_current] = v.index
 * 
 *             for j from csrT_indptr[v.index] <= j < csrT_indptr[v.index + 1]:             # <<<<<<<<<<<<<<
 *                 j_current = csrT_indices[j]
 *                 current_node = &nodes[j_current]
 */
      __pyx_t_19 = __pyx_v_v->index;
      __pyx_t_3 = -1;
      if (unlikely(__pyx_t_19 >= (size_t)__pyx_pybuffernd_csrT_indptr.diminfo[0].shape)) __pyx_t_3 = 0;
      if (unlikely(__pyx_t_3 != -1)) {
        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 589; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
      }
      __pyx_t_20 = (__pyx_v_v->index + 1);
      __pyx_t_3 = -1;
      if (__pyx_t_20 < 0) {
        __pyx_t_20 += __pyx_pybuffernd_csrT_indptr.diminfo[0].shape;
        if (unlikely(__pyx_t_20 < 0)) __pyx_t_3 = 0;
      } else if (unlikely(__pyx_t_20 >= __pyx_pybuffernd_csrT_indptr.diminfo[0].shape)) __pyx_t_3 = 0;
      if (unlikely(__pyx_t_3 != -1)) {
        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 589; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
      }
      __pyx_t_12 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csrT_indptr.rcbuffer->pybuffer.buf, __pyx_t_20, __pyx_pybuffernd_csrT_indptr.diminfo[0].strides));
      for (__pyx_v_j = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csrT_indptr.rcbuffer->pybuffer.buf, __pyx_t_19, __pyx_pybuffernd_csrT_indptr.diminfo[0].strides)); __pyx_v_j < __pyx_t_12; __pyx_v_j++) {

        /* "scipy/sparse/csgraph/_shortest_path.pyx":590
 * 
 *             for j from csrT_indptr[v.index] <= j < csrT_indptr[v.index + 1]:
 *                 j_current = csrT_indices[j]             # <<<<<<<<<<<<<<
 *                 current_node = &nodes[j_current]
 *                 if current_node.state != SCANNED:
 */
        __pyx_t_21 = __pyx_v_j;
        __pyx_t_3 = -1;
        if (__pyx_t_21 < 0) {
          __pyx_t_21 += __pyx_pybuffernd_csrT_indices.diminfo[0].shape;
          if (unlikely(__pyx_t_21 < 0)) __pyx_t_3 = 0;
        } else if (unlikely(__pyx_t_21 >= __pyx_pybuffernd_csrT_indices.diminfo[0].shape)) __pyx_t_3 = 0;
        if (unlikely(__pyx_t_3 != -1)) {
          __Pyx_RaiseBufferIndexError(__pyx_t_3);
          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 590; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
        }
        __pyx_v_j_current = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csrT_indices.rcbuffer->pybuffer.buf, __pyx_t_21, __pyx_pybuffernd_csrT_indices.diminfo[0].strides));

        /* "scipy/sparse/csgraph/_shortest_path.pyx":591
 *             for j from csrT_indptr[v.index] <= j < csrT_indptr[v.index + 1]:
 *                 j_current = csrT_indices[j]
 *                 current_node = &nodes[j_current]             # <<<<<<<<<<<<<<
 *                 if current_node.state != SCANNED:
 *                     next_val = v.val + csrT_weights[j]
 */
        __pyx_v_current_node = (&(__pyx_v_nodes[__pyx_v_j_current]));

        /* "scipy/sparse/csgraph/_shortest_path.pyx":592
 *                 j_current = csrT_indices[j]
 *                 current_node = &nodes[j_current]
 *                 if current_node.state != SCANNED:             # <<<<<<<<<<<<<<
 *                     next_val = v.val + csrT_weights[j]
 *                     if next_val <= limit:
 */
        __pyx_t_9 = ((__pyx_v_current_node->state != __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_SCANNED) != 0);
        if (__pyx_t_9) {

          /* "scipy/sparse/csgraph/_shortest_path.pyx":593
 *                 current_node = &nodes[j_current]
 *                 if current_node.state != SCANNED:
 *                     next_val = v.val + csrT_weights[j]             # <<<<<<<<<<<<<<
 *                     if next_val <= limit:
 *                         if current_node.state == NOT_IN_HEAP:
 */
          __pyx_t_22 = __pyx_v_j;
          __pyx_t_3 = -1;
          if (__pyx_t_22 < 0) {
            __pyx_t_22 += __pyx_pybuffernd_csrT_weights.diminfo[0].shape;
            if (unlikely(__pyx_t_22 < 0)) __pyx_t_3 = 0;
          } else if (unlikely(__pyx_t_22 >= __pyx_pybuffernd_csrT_weights.diminfo[0].shape)) __pyx_t_3 = 0;
          if (unlikely(__pyx_t_3 != -1)) {
            __Pyx_RaiseBufferIndexError(__pyx_t_3);
            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 593; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
          }
          __pyx_v_next_val = (__pyx_v_v->val + (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_csrT_weights.rcbuffer->pybuffer.buf, __pyx_t_22, __pyx_pybuffernd_csrT_weights.diminfo[0].strides)));

          /* "scipy/sparse/csgraph/_shortest_path.pyx":594
 *                 if current_node.state != SCANNED:
 *                     next_val = v.val + csrT_weights[j]
 *                     if next_val <= limit:             # <<<<<<<<<<<<<<
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP
 */
          __pyx_t_9 = ((__pyx_v_next_val <= __pyx_v_limit) != 0);
          if (__pyx_t_9) {

            /* "scipy/sparse/csgraph/_shortest_path.pyx":595
 *                     next_val = v.val + csrT_weights[j]
 *                     if next_val <= limit:
 *                         if current_node.state == NOT_IN_HEAP:             # <<<<<<<<<<<<<<
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val
 */
            __pyx_t_9 = ((__pyx_v_current_node->state == __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_NOT_IN_HEAP) != 0);
            if (__pyx_t_9) {

              /* "scipy/sparse/csgraph/_shortest_path.pyx":596
 *                     if next_val <= limit:
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP             # <<<<<<<<<<<<<<
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)
 */
              __pyx_v_current_node->state = __pyx_e_5scipy_6sparse_7csgraph_14_shortest_path_IN_HEAP;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":597
 *                         if current_node.state == NOT_IN_HEAP:
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val             # <<<<<<<<<<<<<<
 *                             insert_node(&heap, current_node)
 *                             if return_pred:
 */
              __pyx_v_current_node->val = __pyx_v_next_val;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":598
 *                             current_node.state = IN_HEAP
 *                             current_node.val = next_val
 *                             insert_node(&heap, current_node)             # <<<<<<<<<<<<<<
 *                             if return_pred:
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          if (unlikely(__pyx_t_11 < 0)) __pyx_t_3 = 0;
        } else if (unlikely(__pyx_t_11 >= __pyx_pybuffernd_csr_indptr.diminfo[0].shape)) __pyx_t_3 = 0;
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          __Pyx_RaiseBufferIndexError(__pyx_t_3);
          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 795; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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        __pyx_t_12 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indptr.rcbuffer->pybuffer.buf, __pyx_t_11, __pyx_pybuffernd_csr_indptr.diminfo[0].strides));
        for (__pyx_v_k = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indptr.rcbuffer->pybuffer.buf, __pyx_t_10, __pyx_pybuffernd_csr_indptr.diminfo[0].strides)); __pyx_v_k < __pyx_t_12; __pyx_v_k++) {

          /* "scipy/sparse/csgraph/_shortest_path.pyx":796
 *                 d1 = dist_matrix[i, j]
 *                 for k from csr_indptr[j] <= k < csr_indptr[j + 1]:
 *                     w12 = csr_weights[k]             # <<<<<<<<<<<<<<
 *                     ind_k = csr_indices[k]
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          __pyx_t_3 = -1;
          if (unlikely(__pyx_t_13 >= (size_t)__pyx_pybuffernd_csr_weights.diminfo[0].shape)) __pyx_t_3 = 0;
          if (unlikely(__pyx_t_3 != -1)) {
            __Pyx_RaiseBufferIndexError(__pyx_t_3);
            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 796; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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          __pyx_v_w12 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_csr_weights.rcbuffer->pybuffer.buf, __pyx_t_13, __pyx_pybuffernd_csr_weights.diminfo[0].strides));

          /* "scipy/sparse/csgraph/_shortest_path.pyx":797
 *                 for k from csr_indptr[j] <= k < csr_indptr[j + 1]:
 *                     w12 = csr_weights[k]
 *                     ind_k = csr_indices[k]             # <<<<<<<<<<<<<<
 *                     d2 = dist_matrix[i, ind_k]
 *                     if d1 + w12 < d2:
 */
          __pyx_t_14 = __pyx_v_k;
          __pyx_t_3 = -1;
          if (unlikely(__pyx_t_14 >= (size_t)__pyx_pybuffernd_csr_indices.diminfo[0].shape)) __pyx_t_3 = 0;
          if (unlikely(__pyx_t_3 != -1)) {
            __Pyx_RaiseBufferIndexError(__pyx_t_3);
            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 797; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
          }
          __pyx_v_ind_k = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indices.rcbuffer->pybuffer.buf, __pyx_t_14, __pyx_pybuffernd_csr_indices.diminfo[0].strides));

          /* "scipy/sparse/csgraph/_shortest_path.pyx":798
 *                     w12 = csr_weights[k]
 *                     ind_k = csr_indices[k]
 *                     d2 = dist_matrix[i, ind_k]             # <<<<<<<<<<<<<<
 *                     if d1 + w12 < d2:
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          __pyx_t_15 = __pyx_v_i;
          __pyx_t_16 = __pyx_v_ind_k;
          __pyx_t_3 = -1;
          if (unlikely(__pyx_t_15 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[0].shape)) __pyx_t_3 = 0;
          if (unlikely(__pyx_t_16 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[1].shape)) __pyx_t_3 = 1;
          if (unlikely(__pyx_t_3 != -1)) {
            __Pyx_RaiseBufferIndexError(__pyx_t_3);
            {__pyx_filename = __pyx_f[0]; __pyx_lineno = 798; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
          }
          __pyx_v_d2 = (*__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_dist_matrix.rcbuffer->pybuffer.buf, __pyx_t_15, __pyx_pybuffernd_dist_matrix.diminfo[0].strides, __pyx_t_16, __pyx_pybuffernd_dist_matrix.diminfo[1].strides));

          /* "scipy/sparse/csgraph/_shortest_path.pyx":799
 *                     ind_k = csr_indices[k]
 *                     d2 = dist_matrix[i, ind_k]
 *                     if d1 + w12 < d2:             # <<<<<<<<<<<<<<
 *                         dist_matrix[i, ind_k] = d2 = d1 + w12
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            /* "scipy/sparse/csgraph/_shortest_path.pyx":800
 *                     d2 = dist_matrix[i, ind_k]
 *                     if d1 + w12 < d2:
 *                         dist_matrix[i, ind_k] = d2 = d1 + w12             # <<<<<<<<<<<<<<
 *                         if return_pred:
 *                             pred[i, ind_k] = j
 */
            __pyx_t_18 = (__pyx_v_d1 + __pyx_v_w12);
            __pyx_t_19 = __pyx_v_i;
            __pyx_t_20 = __pyx_v_ind_k;
            __pyx_t_3 = -1;
            if (unlikely(__pyx_t_19 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[0].shape)) __pyx_t_3 = 0;
            if (unlikely(__pyx_t_20 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[1].shape)) __pyx_t_3 = 1;
            if (unlikely(__pyx_t_3 != -1)) {
              __Pyx_RaiseBufferIndexError(__pyx_t_3);
              {__pyx_filename = __pyx_f[0]; __pyx_lineno = 800; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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            *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_dist_matrix.rcbuffer->pybuffer.buf, __pyx_t_19, __pyx_pybuffernd_dist_matrix.diminfo[0].strides, __pyx_t_20, __pyx_pybuffernd_dist_matrix.diminfo[1].strides) = __pyx_t_18;
            __pyx_v_d2 = __pyx_t_18;

            /* "scipy/sparse/csgraph/_shortest_path.pyx":801
 *                     if d1 + w12 < d2:
 *                         dist_matrix[i, ind_k] = d2 = d1 + w12
 *                         if return_pred:             # <<<<<<<<<<<<<<
 *                             pred[i, ind_k] = j
 *                     if d2 + w12 < d1:
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            __pyx_t_17 = (__pyx_v_return_pred != 0);
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              /* "scipy/sparse/csgraph/_shortest_path.pyx":802
 *                         dist_matrix[i, ind_k] = d2 = d1 + w12
 *                         if return_pred:
 *                             pred[i, ind_k] = j             # <<<<<<<<<<<<<<
 *                     if d2 + w12 < d1:
 *                         dist_matrix[i, j] = d1 = d2 + w12
 */
              __pyx_t_21 = __pyx_v_i;
              __pyx_t_22 = __pyx_v_ind_k;
              __pyx_t_3 = -1;
              if (unlikely(__pyx_t_21 >= (size_t)__pyx_pybuffernd_pred.diminfo[0].shape)) __pyx_t_3 = 0;
              if (unlikely(__pyx_t_22 >= (size_t)__pyx_pybuffernd_pred.diminfo[1].shape)) __pyx_t_3 = 1;
              if (unlikely(__pyx_t_3 != -1)) {
                __Pyx_RaiseBufferIndexError(__pyx_t_3);
                {__pyx_filename = __pyx_f[0]; __pyx_lineno = 802; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
              }
              *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_pred.rcbuffer->pybuffer.buf, __pyx_t_21, __pyx_pybuffernd_pred.diminfo[0].strides, __pyx_t_22, __pyx_pybuffernd_pred.diminfo[1].strides) = __pyx_v_j;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":801
 *                     if d1 + w12 < d2:
 *                         dist_matrix[i, ind_k] = d2 = d1 + w12
 *                         if return_pred:             # <<<<<<<<<<<<<<
 *                             pred[i, ind_k] = j
 *                     if d2 + w12 < d1:
 */
            }

            /* "scipy/sparse/csgraph/_shortest_path.pyx":799
 *                     ind_k = csr_indices[k]
 *                     d2 = dist_matrix[i, ind_k]
 *                     if d1 + w12 < d2:             # <<<<<<<<<<<<<<
 *                         dist_matrix[i, ind_k] = d2 = d1 + w12
 *                         if return_pred:
 */
          }

          /* "scipy/sparse/csgraph/_shortest_path.pyx":803
 *                         if return_pred:
 *                             pred[i, ind_k] = j
 *                     if d2 + w12 < d1:             # <<<<<<<<<<<<<<
 *                         dist_matrix[i, j] = d1 = d2 + w12
 *                         if return_pred:
 */
          __pyx_t_17 = (((__pyx_v_d2 + __pyx_v_w12) < __pyx_v_d1) != 0);
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            /* "scipy/sparse/csgraph/_shortest_path.pyx":804
 *                             pred[i, ind_k] = j
 *                     if d2 + w12 < d1:
 *                         dist_matrix[i, j] = d1 = d2 + w12             # <<<<<<<<<<<<<<
 *                         if return_pred:
 *                             pred[i, j] = ind_k
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            __pyx_t_18 = (__pyx_v_d2 + __pyx_v_w12);
            __pyx_t_23 = __pyx_v_i;
            __pyx_t_24 = __pyx_v_j;
            __pyx_t_3 = -1;
            if (unlikely(__pyx_t_23 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[0].shape)) __pyx_t_3 = 0;
            if (unlikely(__pyx_t_24 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[1].shape)) __pyx_t_3 = 1;
            if (unlikely(__pyx_t_3 != -1)) {
              __Pyx_RaiseBufferIndexError(__pyx_t_3);
              {__pyx_filename = __pyx_f[0]; __pyx_lineno = 804; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
            }
            *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_dist_matrix.rcbuffer->pybuffer.buf, __pyx_t_23, __pyx_pybuffernd_dist_matrix.diminfo[0].strides, __pyx_t_24, __pyx_pybuffernd_dist_matrix.diminfo[1].strides) = __pyx_t_18;
            __pyx_v_d1 = __pyx_t_18;

            /* "scipy/sparse/csgraph/_shortest_path.pyx":805
 *                     if d2 + w12 < d1:
 *                         dist_matrix[i, j] = d1 = d2 + w12
 *                         if return_pred:             # <<<<<<<<<<<<<<
 *                             pred[i, j] = ind_k
 * 
 */
            __pyx_t_17 = (__pyx_v_return_pred != 0);
            if (__pyx_t_17) {

              /* "scipy/sparse/csgraph/_shortest_path.pyx":806
 *                         dist_matrix[i, j] = d1 = d2 + w12
 *                         if return_pred:
 *                             pred[i, j] = ind_k             # <<<<<<<<<<<<<<
 * 
 *         # check for negative-weight cycles
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              __pyx_t_25 = __pyx_v_i;
              __pyx_t_26 = __pyx_v_j;
              __pyx_t_3 = -1;
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              if (unlikely(__pyx_t_26 >= (size_t)__pyx_pybuffernd_pred.diminfo[1].shape)) __pyx_t_3 = 1;
              if (unlikely(__pyx_t_3 != -1)) {
                __Pyx_RaiseBufferIndexError(__pyx_t_3);
                {__pyx_filename = __pyx_f[0]; __pyx_lineno = 806; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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              *__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_pred.rcbuffer->pybuffer.buf, __pyx_t_25, __pyx_pybuffernd_pred.diminfo[0].strides, __pyx_t_26, __pyx_pybuffernd_pred.diminfo[1].strides) = __pyx_v_ind_k;

              /* "scipy/sparse/csgraph/_shortest_path.pyx":805
 *                     if d2 + w12 < d1:
 *                         dist_matrix[i, j] = d1 = d2 + w12
 *                         if return_pred:             # <<<<<<<<<<<<<<
 *                             pred[i, j] = ind_k
 * 
 */
            }

            /* "scipy/sparse/csgraph/_shortest_path.pyx":803
 *                         if return_pred:
 *                             pred[i, ind_k] = j
 *                     if d2 + w12 < d1:             # <<<<<<<<<<<<<<
 *                         dist_matrix[i, j] = d1 = d2 + w12
 *                         if return_pred:
 */
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    /* "scipy/sparse/csgraph/_shortest_path.pyx":809
 * 
 *         # check for negative-weight cycles
 *         for j from 0 <= j < N:             # <<<<<<<<<<<<<<
 *             d1 = dist_matrix[i, j]
 *             for k from csr_indptr[j] <= k < csr_indptr[j + 1]:
 */
    __pyx_t_7 = __pyx_v_N;
    for (__pyx_v_j = 0; __pyx_v_j < __pyx_t_7; __pyx_v_j++) {

      /* "scipy/sparse/csgraph/_shortest_path.pyx":810
 *         # check for negative-weight cycles
 *         for j from 0 <= j < N:
 *             d1 = dist_matrix[i, j]             # <<<<<<<<<<<<<<
 *             for k from csr_indptr[j] <= k < csr_indptr[j + 1]:
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 */
      __pyx_t_27 = __pyx_v_i;
      __pyx_t_28 = __pyx_v_j;
      __pyx_t_3 = -1;
      if (unlikely(__pyx_t_27 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[0].shape)) __pyx_t_3 = 0;
      if (unlikely(__pyx_t_28 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[1].shape)) __pyx_t_3 = 1;
      if (unlikely(__pyx_t_3 != -1)) {
        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 810; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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      __pyx_v_d1 = (*__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_dist_matrix.rcbuffer->pybuffer.buf, __pyx_t_27, __pyx_pybuffernd_dist_matrix.diminfo[0].strides, __pyx_t_28, __pyx_pybuffernd_dist_matrix.diminfo[1].strides));

      /* "scipy/sparse/csgraph/_shortest_path.pyx":811
 *         for j from 0 <= j < N:
 *             d1 = dist_matrix[i, j]
 *             for k from csr_indptr[j] <= k < csr_indptr[j + 1]:             # <<<<<<<<<<<<<<
 *                 w12 = csr_weights[k]
 *                 d2 = dist_matrix[i, csr_indices[k]]
 */
      __pyx_t_29 = __pyx_v_j;
      __pyx_t_3 = -1;
      if (unlikely(__pyx_t_29 >= (size_t)__pyx_pybuffernd_csr_indptr.diminfo[0].shape)) __pyx_t_3 = 0;
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        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 811; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
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      __pyx_t_30 = (__pyx_v_j + 1);
      __pyx_t_3 = -1;
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        __pyx_t_30 += __pyx_pybuffernd_csr_indptr.diminfo[0].shape;
        if (unlikely(__pyx_t_30 < 0)) __pyx_t_3 = 0;
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      if (unlikely(__pyx_t_3 != -1)) {
        __Pyx_RaiseBufferIndexError(__pyx_t_3);
        {__pyx_filename = __pyx_f[0]; __pyx_lineno = 811; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
      }
      __pyx_t_12 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indptr.rcbuffer->pybuffer.buf, __pyx_t_30, __pyx_pybuffernd_csr_indptr.diminfo[0].strides));
      for (__pyx_v_k = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indptr.rcbuffer->pybuffer.buf, __pyx_t_29, __pyx_pybuffernd_csr_indptr.diminfo[0].strides)); __pyx_v_k < __pyx_t_12; __pyx_v_k++) {

        /* "scipy/sparse/csgraph/_shortest_path.pyx":812
 *             d1 = dist_matrix[i, j]
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 *                 w12 = csr_weights[k]             # <<<<<<<<<<<<<<
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 */
        __pyx_t_31 = __pyx_v_k;
        __pyx_t_3 = -1;
        if (unlikely(__pyx_t_31 >= (size_t)__pyx_pybuffernd_csr_weights.diminfo[0].shape)) __pyx_t_3 = 0;
        if (unlikely(__pyx_t_3 != -1)) {
          __Pyx_RaiseBufferIndexError(__pyx_t_3);
          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 812; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
        }
        __pyx_v_w12 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_csr_weights.rcbuffer->pybuffer.buf, __pyx_t_31, __pyx_pybuffernd_csr_weights.diminfo[0].strides));

        /* "scipy/sparse/csgraph/_shortest_path.pyx":813
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 *                 w12 = csr_weights[k]
 *                 d2 = dist_matrix[i, csr_indices[k]]             # <<<<<<<<<<<<<<
 *                 if abs(d2 - d1) > w12 + DTYPE_EPS:
 *                     return j_source
 */
        __pyx_t_32 = __pyx_v_k;
        __pyx_t_3 = -1;
        if (unlikely(__pyx_t_32 >= (size_t)__pyx_pybuffernd_csr_indices.diminfo[0].shape)) __pyx_t_3 = 0;
        if (unlikely(__pyx_t_3 != -1)) {
          __Pyx_RaiseBufferIndexError(__pyx_t_3);
          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 813; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
        }
        __pyx_t_33 = __pyx_v_i;
        __pyx_t_34 = (*__Pyx_BufPtrCContig1d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_ITYPE_t *, __pyx_pybuffernd_csr_indices.rcbuffer->pybuffer.buf, __pyx_t_32, __pyx_pybuffernd_csr_indices.diminfo[0].strides));
        __pyx_t_3 = -1;
        if (unlikely(__pyx_t_33 >= (size_t)__pyx_pybuffernd_dist_matrix.diminfo[0].shape)) __pyx_t_3 = 0;
        if (__pyx_t_34 < 0) {
          __pyx_t_34 += __pyx_pybuffernd_dist_matrix.diminfo[1].shape;
          if (unlikely(__pyx_t_34 < 0)) __pyx_t_3 = 1;
        } else if (unlikely(__pyx_t_34 >= __pyx_pybuffernd_dist_matrix.diminfo[1].shape)) __pyx_t_3 = 1;
        if (unlikely(__pyx_t_3 != -1)) {
          __Pyx_RaiseBufferIndexError(__pyx_t_3);
          {__pyx_filename = __pyx_f[0]; __pyx_lineno = 813; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
        }
        __pyx_v_d2 = (*__Pyx_BufPtrCContig2d(__pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t *, __pyx_pybuffernd_dist_matrix.rcbuffer->pybuffer.buf, __pyx_t_33, __pyx_pybuffernd_dist_matrix.diminfo[0].strides, __pyx_t_34, __pyx_pybuffernd_dist_matrix.diminfo[1].strides));

        /* "scipy/sparse/csgraph/_shortest_path.pyx":814
 *                 w12 = csr_weights[k]
 *                 d2 = dist_matrix[i, csr_indices[k]]
 *                 if abs(d2 - d1) > w12 + DTYPE_EPS:             # <<<<<<<<<<<<<<
 *                     return j_source
 * 
 */
        __pyx_t_17 = ((fabs((__pyx_v_d2 - __pyx_v_d1)) > (__pyx_v_w12 + 1e-15)) != 0);
        if (__pyx_t_17) {

          /* "scipy/sparse/csgraph/_shortest_path.pyx":815
 *                 d2 = dist_matrix[i, csr_indices[k]]
 *                 if abs(d2 - d1) > w12 + DTYPE_EPS:
 *                     return j_source             # <<<<<<<<<<<<<<
 * 
 *     return -1
 */
          __pyx_r = __pyx_v_j_source;
          goto __pyx_L0;

          /* "scipy/sparse/csgraph/_shortest_path.pyx":814
 *                 w12 = csr_weights[k]
 *                 d2 = dist_matrix[i, csr_indices[k]]
 *                 if abs(d2 - d1) > w12 + DTYPE_EPS:             # <<<<<<<<<<<<<<
 *                     return j_source
 * 
 */
        }
      }
    }
  }

  /* "scipy/sparse/csgraph/_shortest_path.pyx":817
 *                     return j_source
 * 
 *     return -1             # <<<<<<<<<<<<<<
 * 
 * 
 */
  __pyx_r = -1;
  goto __pyx_L0;

  /* "scipy/sparse/csgraph/_shortest_path.pyx":773
 * 
 * 
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        __Pyx_RaiseBufferIndexError(__pyx_t_4);
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        /* "scipy/sparse/csgraph/_shortest_path.pyx":1055
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 */
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    /* "scipy/sparse/csgraph/_shortest_path.pyx":1152
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    /* "scipy/sparse/csgraph/_shortest_path.pyx":1145
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 *     node.left_sibling = NULL             # <<<<<<<<<<<<<<
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 */
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  /* "scipy/sparse/csgraph/_shortest_path.pyx":1160
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 *     node.left_sibling = NULL
 *     node.right_sibling = NULL             # <<<<<<<<<<<<<<
 *     node.parent = NULL
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 */
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  /* "scipy/sparse/csgraph/_shortest_path.pyx":1161
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 *     node.parent = NULL             # <<<<<<<<<<<<<<
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 * 
 */
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  /* "scipy/sparse/csgraph/_shortest_path.pyx":1143
 * 
 * 
 * cdef void remove(FibonacciNode* node):             # <<<<<<<<<<<<<<
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/* "scipy/sparse/csgraph/_shortest_path.pyx":1177
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 * 
 * cdef void insert_node(FibonacciHeap* heap,             # <<<<<<<<<<<<<<
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static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_insert_node(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap *__pyx_v_heap, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *__pyx_v_node) {
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 *         if node.val < heap.min_node.val:
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 * 
 */
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 * 
 * cdef void insert_node(FibonacciHeap* heap,             # <<<<<<<<<<<<<<
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/* "scipy/sparse/csgraph/_shortest_path.pyx":1190
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 * 
 * cdef void decrease_val(FibonacciHeap* heap,             # <<<<<<<<<<<<<<
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static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_decrease_val(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap *__pyx_v_heap, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *__pyx_v_node, __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_DTYPE_t __pyx_v_newval) {
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 *     if node.parent and (node.parent.val >= newval):             # <<<<<<<<<<<<<<
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 *         remove(node)
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 */
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    /* "scipy/sparse/csgraph/_shortest_path.pyx":1203
 *         insert_node(heap, node)
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 * 
 */
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 *         remove(node)
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 */
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 * 
 * cdef void decrease_val(FibonacciHeap* heap,             # <<<<<<<<<<<<<<
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/* "scipy/sparse/csgraph/_shortest_path.pyx":1206
 * 
 * 
 * cdef void link(FibonacciHeap* heap, FibonacciNode* node):             # <<<<<<<<<<<<<<
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static void __pyx_f_5scipy_6sparse_7csgraph_14_shortest_path_link(struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciHeap *__pyx_v_heap, struct __pyx_t_5scipy_6sparse_7csgraph_14_shortest_path_FibonacciNode *__pyx_v_node) {
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  __Pyx_RefNannyDeclarations
  int __pyx_t_1;
  int __pyx_t_2;
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  /* "scipy/sparse/csgraph/_shortest_path.pyx":1215
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 *     if heap.roots_by_rank[node.rank] == NULL:             # <<<<<<<<<<<<<<
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 */
  __pyx_t_1 = (((__pyx_v_heap->roots_by_rank[__pyx_v_node->rank]) == NULL) != 0);
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    /* "scipy/sparse/csgraph/_shortest_path.pyx":1216
 * 
 *     if heap.roots_by_rank[node.rank] == NULL:
 *         heap.roots_by_rank[node.rank] = node             # <<<<<<<<<<<<<<
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 */
    (__pyx_v_heap->roots_by_rank[__pyx_v_node->rank]) = __pyx_v_node;

    /* "scipy/sparse/csgraph/_shortest_path.pyx":1215
 *     cdef FibonacciNode *child
 * 
 *     if heap.roots_by_rank[node.rank] == NULL:             # <<<<<<<<<<<<<<
 *         heap.roots_by_rank[node.rank] = node
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 */
    goto __pyx_L3;
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  /* "scipy/sparse/csgraph/_shortest_path.pyx":1218
 *         heap.roots_by_rank[node.rank] = node
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 *         heap.roots_by_rank[node.rank] = NULL
 * 
 */
  /*else*/ {
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    /* "scipy/sparse/csgraph/_shortest_path.pyx":1219
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 *         heap.roots_by_rank[node.rank] = NULL             # <<<<<<<<<<<<<<
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 *         if node.val < linknode.val or node == heap.min_node:
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    (__pyx_v_heap->roots_by_rank[__pyx_v_node->rank]) = NULL;

    /* "scipy/sparse/csgraph/_shortest_path.pyx":1221
 *         heap.roots_by_rank[node.rank] = NULL
 * 
 *         if node.val < linknode.val or node == heap.min_node:             # <<<<<<<<<<<<<<
 *             remove(linknode)
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    __pyx_t_2 = ((__pyx_v_node->val < __pyx_v_linknode->val) != 0);
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      /* "scipy/sparse/csgraph/_shortest_path.pyx":1222
 * 
 *         if node.val < linknode.val or node == heap.min_node:
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      /* "scipy/sparse/csgraph/_shortest_path.pyx":1223
 *         if node.val < linknode.val or node == heap.min_node:
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 *             remove(linknode)
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 */
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 * 
 */
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 * 
 * cdef void link(FibonacciHeap* heap, FibonacciNode* node):             # <<<<<<<<<<<<<<
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/* "scipy/sparse/csgraph/_shortest_path.pyx":1231
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 * 
 * cdef FibonacciNode* remove_min(FibonacciHeap* heap):             # <<<<<<<<<<<<<<
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 *     # make all min_node children into root nodes
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 *      arr.base = baseptr
 * 
 * cdef inline object get_array_base(ndarray arr):             # <<<<<<<<<<<<<<
 *     if arr.base is NULL:
 *         return None
 */

  /*--- Wrapped vars code ---*/

  goto __pyx_L0;
  __pyx_L1_error:;
  __Pyx_XDECREF(__pyx_t_1);
  __Pyx_XDECREF(__pyx_t_2);
  __Pyx_XDECREF(__pyx_t_3);
  __Pyx_XDECREF(__pyx_t_4);
  if (__pyx_m) {
    if (__pyx_d) {
      __Pyx_AddTraceback("init scipy.sparse.csgraph._shortest_path", __pyx_clineno, __pyx_lineno, __pyx_filename);
    }
    Py_DECREF(__pyx_m); __pyx_m = 0;
  } else if (!PyErr_Occurred()) {
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  }
  __pyx_L0:;
  __Pyx_RefNannyFinishContext();
  #if PY_MAJOR_VERSION < 3
  return;
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  return __pyx_m;
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/* --- Runtime support code --- */
#if CYTHON_REFNANNY
static __Pyx_RefNannyAPIStruct *__Pyx_RefNannyImportAPI(const char *modname) {
    PyObject *m = NULL, *p = NULL;
    void *r = NULL;
    m = PyImport_ImportModule((char *)modname);
    if (!m) goto end;
    p = PyObject_GetAttrString(m, (char *)"RefNannyAPI");
    if (!p) goto end;
    r = PyLong_AsVoidPtr(p);
end:
    Py_XDECREF(p);
    Py_XDECREF(m);
    return (__Pyx_RefNannyAPIStruct *)r;
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static PyObject *__Pyx_GetBuiltinName(PyObject *name) {
    PyObject* result = __Pyx_PyObject_GetAttrStr(__pyx_b, name);
    if (unlikely(!result)) {
        PyErr_Format(PyExc_NameError,
#if PY_MAJOR_VERSION >= 3
            "name '%U' is not defined", name);
#else
            "name '%.200s' is not defined", PyString_AS_STRING(name));
#endif
    }
    return result;
}

static void __Pyx_RaiseDoubleKeywordsError(
    const char* func_name,
    PyObject* kw_name)
{
    PyErr_Format(PyExc_TypeError,
        #if PY_MAJOR_VERSION >= 3
        "%s() got multiple values for keyword argument '%U'", func_name, kw_name);
        #else
        "%s() got multiple values for keyword argument '%s'", func_name,
        PyString_AsString(kw_name));
        #endif
}

static int __Pyx_ParseOptionalKeywords(
    PyObject *kwds,
    PyObject **argnames[],
    PyObject *kwds2,
    PyObject *values[],
    Py_ssize_t num_pos_args,
    const char* function_name)
{
    PyObject *key = 0, *value = 0;
    Py_ssize_t pos = 0;
    PyObject*** name;
    PyObject*** first_kw_arg = argnames + num_pos_args;
    while (PyDict_Next(kwds, &pos, &key, &value)) {
        name = first_kw_arg;
        while (*name && (**name != key)) name++;
        if (*name) {
            values[name-argnames] = value;
            continue;
        }
        name = first_kw_arg;
        #if PY_MAJOR_VERSION < 3
        if (likely(PyString_CheckExact(key)) || likely(PyString_Check(key))) {
            while (*name) {
                if ((CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**name) == PyString_GET_SIZE(key))
                        && _PyString_Eq(**name, key)) {
                    values[name-argnames] = value;
                    break;
                }
                name++;
            }
            if (*name) continue;
            else {
                PyObject*** argname = argnames;
                while (argname != first_kw_arg) {
                    if ((**argname == key) || (
                            (CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**argname) == PyString_GET_SIZE(key))
                             && _PyString_Eq(**argname, key))) {
                        goto arg_passed_twice;
                    }
                    argname++;
                }
            }
        } else
        #endif
        if (likely(PyUnicode_Check(key))) {
            while (*name) {
                int cmp = (**name == key) ? 0 :
                #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
                    (PyUnicode_GET_SIZE(**name) != PyUnicode_GET_SIZE(key)) ? 1 :
                #endif
                    PyUnicode_Compare(**name, key);
                if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
                if (cmp == 0) {
                    values[name-argnames] = value;
                    break;
                }
                name++;
            }
            if (*name) continue;
            else {
                PyObject*** argname = argnames;
                while (argname != first_kw_arg) {
                    int cmp = (**argname == key) ? 0 :
                    #if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
                        (PyUnicode_GET_SIZE(**argname) != PyUnicode_GET_SIZE(key)) ? 1 :
                    #endif
                        PyUnicode_Compare(**argname, key);
                    if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
                    if (cmp == 0) goto arg_passed_twice;
                    argname++;
                }
            }
        } else
            goto invalid_keyword_type;
        if (kwds2) {
            if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
        } else {
            goto invalid_keyword;
        }
    }
    return 0;
arg_passed_twice:
    __Pyx_RaiseDoubleKeywordsError(function_name, key);
    goto bad;
invalid_keyword_type:
    PyErr_Format(PyExc_TypeError,
        "%.200s() keywords must be strings", function_name);
    goto bad;
invalid_keyword:
    PyErr_Format(PyExc_TypeError,
    #if PY_MAJOR_VERSION < 3
        "%.200s() got an unexpected keyword argument '%.200s'",
        function_name, PyString_AsString(key));
    #else
        "%s() got an unexpected keyword argument '%U'",
        function_name, key);
    #endif
bad:
    return -1;
}

static void __Pyx_RaiseArgtupleInvalid(
    const char* func_name,
    int exact,
    Py_ssize_t num_min,
    Py_ssize_t num_max,
    Py_ssize_t num_found)
{
    Py_ssize_t num_expected;
    const char *more_or_less;
    if (num_found < num_min) {
        num_expected = num_min;
        more_or_less = "at least";
    } else {
        num_expected = num_max;
        more_or_less = "at most";
    }
    if (exact) {
        more_or_less = "exactly";
    }
    PyErr_Format(PyExc_TypeError,
                 "%.200s() takes %.8s %" CYTHON_FORMAT_SSIZE_T "d positional argument%.1s (%" CYTHON_FORMAT_SSIZE_T "d given)",
                 func_name, more_or_less, num_expected,
                 (num_expected == 1) ? "" : "s", num_found);
}

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw) {
    PyObject *result;
    ternaryfunc call = func->ob_type->tp_call;
    if (unlikely(!call))
        return PyObject_Call(func, arg, kw);
    if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
        return NULL;
    result = (*call)(func, arg, kw);
    Py_LeaveRecursiveCall();
    if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
        PyErr_SetString(
            PyExc_SystemError,
            "NULL result without error in PyObject_Call");
    }
    return result;
}
#endif

static CYTHON_INLINE PyObject *__Pyx_GetModuleGlobalName(PyObject *name) {
    PyObject *result;
#if CYTHON_COMPILING_IN_CPYTHON
    result = PyDict_GetItem(__pyx_d, name);
    if (likely(result)) {
        Py_INCREF(result);
    } else {
#else
    result = PyObject_GetItem(__pyx_d, name);
    if (!result) {
        PyErr_Clear();
#endif
        result = __Pyx_GetBuiltinName(name);
    }
    return result;
}

static CYTHON_INLINE int __Pyx_PyBytes_Equals(PyObject* s1, PyObject* s2, int equals) {
#if CYTHON_COMPILING_IN_PYPY
    return PyObject_RichCompareBool(s1, s2, equals);
#else
    if (s1 == s2) {
        return (equals == Py_EQ);
    } else if (PyBytes_CheckExact(s1) & PyBytes_CheckExact(s2)) {
        const char *ps1, *ps2;
        Py_ssize_t length = PyBytes_GET_SIZE(s1);
        if (length != PyBytes_GET_SIZE(s2))
            return (equals == Py_NE);
        ps1 = PyBytes_AS_STRING(s1);
        ps2 = PyBytes_AS_STRING(s2);
        if (ps1[0] != ps2[0]) {
            return (equals == Py_NE);
        } else if (length == 1) {
            return (equals == Py_EQ);
        } else {
            int result = memcmp(ps1, ps2, (size_t)length);
            return (equals == Py_EQ) ? (result == 0) : (result != 0);
        }
    } else if ((s1 == Py_None) & PyBytes_CheckExact(s2)) {
        return (equals == Py_NE);
    } else if ((s2 == Py_None) & PyBytes_CheckExact(s1)) {
        return (equals == Py_NE);
    } else {
        int result;
        PyObject* py_result = PyObject_RichCompare(s1, s2, equals);
        if (!py_result)
            return -1;
        result = __Pyx_PyObject_IsTrue(py_result);
        Py_DECREF(py_result);
        return result;
    }
#endif
}

static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals) {
#if CYTHON_COMPILING_IN_PYPY
    return PyObject_RichCompareBool(s1, s2, equals);
#else
#if PY_MAJOR_VERSION < 3
    PyObject* owned_ref = NULL;
#endif
    int s1_is_unicode, s2_is_unicode;
    if (s1 == s2) {
        goto return_eq;
    }
    s1_is_unicode = PyUnicode_CheckExact(s1);
    s2_is_unicode = PyUnicode_CheckExact(s2);
#if PY_MAJOR_VERSION < 3
    if ((s1_is_unicode & (!s2_is_unicode)) && PyString_CheckExact(s2)) {
        owned_ref = PyUnicode_FromObject(s2);
        if (unlikely(!owned_ref))
            return -1;
        s2 = owned_ref;
        s2_is_unicode = 1;
    } else if ((s2_is_unicode & (!s1_is_unicode)) && PyString_CheckExact(s1)) {
        owned_ref = PyUnicode_FromObject(s1);
        if (unlikely(!owned_ref))
            return -1;
        s1 = owned_ref;
        s1_is_unicode = 1;
    } else if (((!s2_is_unicode) & (!s1_is_unicode))) {
        return __Pyx_PyBytes_Equals(s1, s2, equals);
    }
#endif
    if (s1_is_unicode & s2_is_unicode) {
        Py_ssize_t length;
        int kind;
        void *data1, *data2;
        if (unlikely(__Pyx_PyUnicode_READY(s1) < 0) || unlikely(__Pyx_PyUnicode_READY(s2) < 0))
            return -1;
        length = __Pyx_PyUnicode_GET_LENGTH(s1);
        if (length != __Pyx_PyUnicode_GET_LENGTH(s2)) {
            goto return_ne;
        }
        kind = __Pyx_PyUnicode_KIND(s1);
        if (kind != __Pyx_PyUnicode_KIND(s2)) {
            goto return_ne;
        }
        data1 = __Pyx_PyUnicode_DATA(s1);
        data2 = __Pyx_PyUnicode_DATA(s2);
        if (__Pyx_PyUnicode_READ(kind, data1, 0) != __Pyx_PyUnicode_READ(kind, data2, 0)) {
            goto return_ne;
        } else if (length == 1) {
            goto return_eq;
        } else {
            int result = memcmp(data1, data2, (size_t)(length * kind));
            #if PY_MAJOR_VERSION < 3
            Py_XDECREF(owned_ref);
            #endif
            return (equals == Py_EQ) ? (result == 0) : (result != 0);
        }
    } else if ((s1 == Py_None) & s2_is_unicode) {
        goto return_ne;
    } else if ((s2 == Py_None) & s1_is_unicode) {
        goto return_ne;
    } else {
        int result;
        PyObject* py_result = PyObject_RichCompare(s1, s2, equals);
        if (!py_result)
            return -1;
        result = __Pyx_PyObject_IsTrue(py_result);
        Py_DECREF(py_result);
        return result;
    }
return_eq:
    #if PY_MAJOR_VERSION < 3
    Py_XDECREF(owned_ref);
    #endif
    return (equals == Py_EQ);
return_ne:
    #if PY_MAJOR_VERSION < 3
    Py_XDECREF(owned_ref);
    #endif
    return (equals == Py_NE);
#endif
}

static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j) {
    PyObject *r;
    if (!j) return NULL;
    r = PyObject_GetItem(o, j);
    Py_DECREF(j);
    return r;
}
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_List_Fast(PyObject *o, Py_ssize_t i,
                                                              CYTHON_NCP_UNUSED int wraparound,
                                                              CYTHON_NCP_UNUSED int boundscheck) {
#if CYTHON_COMPILING_IN_CPYTHON
    if (wraparound & unlikely(i < 0)) i += PyList_GET_SIZE(o);
    if ((!boundscheck) || likely((0 <= i) & (i < PyList_GET_SIZE(o)))) {
        PyObject *r = PyList_GET_ITEM(o, i);
        Py_INCREF(r);
        return r;
    }
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
#else
    return PySequence_GetItem(o, i);
#endif
}
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Tuple_Fast(PyObject *o, Py_ssize_t i,
                                                              CYTHON_NCP_UNUSED int wraparound,
                                                              CYTHON_NCP_UNUSED int boundscheck) {
#if CYTHON_COMPILING_IN_CPYTHON
    if (wraparound & unlikely(i < 0)) i += PyTuple_GET_SIZE(o);
    if ((!boundscheck) || likely((0 <= i) & (i < PyTuple_GET_SIZE(o)))) {
        PyObject *r = PyTuple_GET_ITEM(o, i);
        Py_INCREF(r);
        return r;
    }
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
#else
    return PySequence_GetItem(o, i);
#endif
}
static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i, int is_list,
                                                     CYTHON_NCP_UNUSED int wraparound,
                                                     CYTHON_NCP_UNUSED int boundscheck) {
#if CYTHON_COMPILING_IN_CPYTHON
    if (is_list || PyList_CheckExact(o)) {
        Py_ssize_t n = ((!wraparound) | likely(i >= 0)) ? i : i + PyList_GET_SIZE(o);
        if ((!boundscheck) || (likely((n >= 0) & (n < PyList_GET_SIZE(o))))) {
            PyObject *r = PyList_GET_ITEM(o, n);
            Py_INCREF(r);
            return r;
        }
    }
    else if (PyTuple_CheckExact(o)) {
        Py_ssize_t n = ((!wraparound) | likely(i >= 0)) ? i : i + PyTuple_GET_SIZE(o);
        if ((!boundscheck) || likely((n >= 0) & (n < PyTuple_GET_SIZE(o)))) {
            PyObject *r = PyTuple_GET_ITEM(o, n);
            Py_INCREF(r);
            return r;
        }
    } else {
        PySequenceMethods *m = Py_TYPE(o)->tp_as_sequence;
        if (likely(m && m->sq_item)) {
            if (wraparound && unlikely(i < 0) && likely(m->sq_length)) {
                Py_ssize_t l = m->sq_length(o);
                if (likely(l >= 0)) {
                    i += l;
                } else {
                    if (PyErr_ExceptionMatches(PyExc_OverflowError))
                        PyErr_Clear();
                    else
                        return NULL;
                }
            }
            return m->sq_item(o, i);
        }
    }
#else
    if (is_list || PySequence_Check(o)) {
        return PySequence_GetItem(o, i);
    }
#endif
    return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
}

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallMethO(PyObject *func, PyObject *arg) {
    PyObject *self, *result;
    PyCFunction cfunc;
    cfunc = PyCFunction_GET_FUNCTION(func);
    self = PyCFunction_GET_SELF(func);
    if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
        return NULL;
    result = cfunc(self, arg);
    Py_LeaveRecursiveCall();
    if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
        PyErr_SetString(
            PyExc_SystemError,
            "NULL result without error in PyObject_Call");
    }
    return result;
}
#endif

#if CYTHON_COMPILING_IN_CPYTHON
static PyObject* __Pyx__PyObject_CallOneArg(PyObject *func, PyObject *arg) {
    PyObject *result;
    PyObject *args = PyTuple_New(1);
    if (unlikely(!args)) return NULL;
    Py_INCREF(arg);
    PyTuple_SET_ITEM(args, 0, arg);
    result = __Pyx_PyObject_Call(func, args, NULL);
    Py_DECREF(args);
    return result;
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
#ifdef __Pyx_CyFunction_USED
    if (likely(PyCFunction_Check(func) || PyObject_TypeCheck(func, __pyx_CyFunctionType))) {
#else
    if (likely(PyCFunction_Check(func))) {
#endif
        if (likely(PyCFunction_GET_FLAGS(func) & METH_O)) {
            return __Pyx_PyObject_CallMethO(func, arg);
        }
    }
    return __Pyx__PyObject_CallOneArg(func, arg);
}
#else
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
    PyObject *result;
    PyObject *args = PyTuple_Pack(1, arg);
    if (unlikely(!args)) return NULL;
    result = __Pyx_PyObject_Call(func, args, NULL);
    Py_DECREF(args);
    return result;
}
#endif

static CYTHON_INLINE Py_ssize_t __Pyx_div_Py_ssize_t(Py_ssize_t a, Py_ssize_t b) {
    Py_ssize_t q = a / b;
    Py_ssize_t r = a - q*b;
    q -= ((r != 0) & ((r ^ b) < 0));
    return q;
}

static CYTHON_INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb) {
#if CYTHON_COMPILING_IN_CPYTHON
    PyObject *tmp_type, *tmp_value, *tmp_tb;
    PyThreadState *tstate = PyThreadState_GET();
    tmp_type = tstate->curexc_type;
    tmp_value = tstate->curexc_value;
    tmp_tb = tstate->curexc_traceback;
    tstate->curexc_type = type;
    tstate->curexc_value = value;
    tstate->curexc_traceback = tb;
    Py_XDECREF(tmp_type);
    Py_XDECREF(tmp_value);
    Py_XDECREF(tmp_tb);
#else
    PyErr_Restore(type, value, tb);
#endif
}
static CYTHON_INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb) {
#if CYTHON_COMPILING_IN_CPYTHON
    PyThreadState *tstate = PyThreadState_GET();
    *type = tstate->curexc_type;
    *value = tstate->curexc_value;
    *tb = tstate->curexc_traceback;
    tstate->curexc_type = 0;
    tstate->curexc_value = 0;
    tstate->curexc_traceback = 0;
#else
    PyErr_Fetch(type, value, tb);
#endif
}

#if PY_MAJOR_VERSION < 3
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb,
                        CYTHON_UNUSED PyObject *cause) {
    Py_XINCREF(type);
    if (!value || value == Py_None)
        value = NULL;
    else
        Py_INCREF(value);
    if (!tb || tb == Py_None)
        tb = NULL;
    else {
        Py_INCREF(tb);
        if (!PyTraceBack_Check(tb)) {
            PyErr_SetString(PyExc_TypeError,
                "raise: arg 3 must be a traceback or None");
            goto raise_error;
        }
    }
    if (PyType_Check(type)) {
#if CYTHON_COMPILING_IN_PYPY
        if (!value) {
            Py_INCREF(Py_None);
            value = Py_None;
        }
#endif
        PyErr_NormalizeException(&type, &value, &tb);
    } else {
        if (value) {
            PyErr_SetString(PyExc_TypeError,
                "instance exception may not have a separate value");
            goto raise_error;
        }
        value = type;
        type = (PyObject*) Py_TYPE(type);
        Py_INCREF(type);
        if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
            PyErr_SetString(PyExc_TypeError,
                "raise: exception class must be a subclass of BaseException");
            goto raise_error;
        }
    }
    __Pyx_ErrRestore(type, value, tb);
    return;
raise_error:
    Py_XDECREF(value);
    Py_XDECREF(type);
    Py_XDECREF(tb);
    return;
}
#else
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause) {
    PyObject* owned_instance = NULL;
    if (tb == Py_None) {
        tb = 0;
    } else if (tb && !PyTraceBack_Check(tb)) {
        PyErr_SetString(PyExc_TypeError,
            "raise: arg 3 must be a traceback or None");
        goto bad;
    }
    if (value == Py_None)
        value = 0;
    if (PyExceptionInstance_Check(type)) {
        if (value) {
            PyErr_SetString(PyExc_TypeError,
                "instance exception may not have a separate value");
            goto bad;
        }
        value = type;
        type = (PyObject*) Py_TYPE(value);
    } else if (PyExceptionClass_Check(type)) {
        PyObject *instance_class = NULL;
        if (value && PyExceptionInstance_Check(value)) {
            instance_class = (PyObject*) Py_TYPE(value);
            if (instance_class != type) {
                int is_subclass = PyObject_IsSubclass(instance_class, type);
                if (!is_subclass) {
                    instance_class = NULL;
                } else if (unlikely(is_subclass == -1)) {
                    goto bad;
                } else {
                    type = instance_class;
                }
            }
        }
        if (!instance_class) {
            PyObject *args;
            if (!value)
                args = PyTuple_New(0);
            else if (PyTuple_Check(value)) {
                Py_INCREF(value);
                args = value;
            } else
                args = PyTuple_Pack(1, value);
            if (!args)
                goto bad;
            owned_instance = PyObject_Call(type, args, NULL);
            Py_DECREF(args);
            if (!owned_instance)
                goto bad;
            value = owned_instance;
            if (!PyExceptionInstance_Check(value)) {
                PyErr_Format(PyExc_TypeError,
                             "calling %R should have returned an instance of "
                             "BaseException, not %R",
                             type, Py_TYPE(value));
                goto bad;
            }
        }
    } else {
        PyErr_SetString(PyExc_TypeError,
            "raise: exception class must be a subclass of BaseException");
        goto bad;
    }
#if PY_VERSION_HEX >= 0x03030000
    if (cause) {
#else
    if (cause && cause != Py_None) {
#endif
        PyObject *fixed_cause;
        if (cause == Py_None) {
            fixed_cause = NULL;
        } else if (PyExceptionClass_Check(cause)) {
            fixed_cause = PyObject_CallObject(cause, NULL);
            if (fixed_cause == NULL)
                goto bad;
        } else if (PyExceptionInstance_Check(cause)) {
            fixed_cause = cause;
            Py_INCREF(fixed_cause);
        } else {
            PyErr_SetString(PyExc_TypeError,
                            "exception causes must derive from "
                            "BaseException");
            goto bad;
        }
        PyException_SetCause(value, fixed_cause);
    }
    PyErr_SetObject(type, value);
    if (tb) {
#if CYTHON_COMPILING_IN_PYPY
        PyObject *tmp_type, *tmp_value, *tmp_tb;
        PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
        Py_INCREF(tb);
        PyErr_Restore(tmp_type, tmp_value, tb);
        Py_XDECREF(tmp_tb);
#else
        PyThreadState *tstate = PyThreadState_GET();
        PyObject* tmp_tb = tstate->curexc_traceback;
        if (tb != tmp_tb) {
            Py_INCREF(tb);
            tstate->curexc_traceback = tb;
            Py_XDECREF(tmp_tb);
        }
#endif
    }
bad:
    Py_XDECREF(owned_instance);
    return;
}
#endif

static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
    if (unlikely(!type)) {
        PyErr_SetString(PyExc_SystemError, "Missing type object");
        return 0;
    }
    if (likely(PyObject_TypeCheck(obj, type)))
        return 1;
    PyErr_Format(PyExc_TypeError, "Cannot convert %.200s to %.200s",
                 Py_TYPE(obj)->tp_name, type->tp_name);
    return 0;
}

#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallNoArg(PyObject *func) {
#ifdef __Pyx_CyFunction_USED
    if (likely(PyCFunction_Check(func) || PyObject_TypeCheck(func, __pyx_CyFunctionType))) {
#else
    if (likely(PyCFunction_Check(func))) {
#endif
        if (likely(PyCFunction_GET_FLAGS(func) & METH_NOARGS)) {
            return __Pyx_PyObject_CallMethO(func, NULL);
        }
    }
    return __Pyx_PyObject_Call(func, __pyx_empty_tuple, NULL);
}
#endif

static CYTHON_INLINE int __Pyx_IsLittleEndian(void) {
  unsigned int n = 1;
  return *(unsigned char*)(&n) != 0;
}
static void __Pyx_BufFmt_Init(__Pyx_BufFmt_Context* ctx,
                              __Pyx_BufFmt_StackElem* stack,
                              __Pyx_TypeInfo* type) {
  stack[0].field = &ctx->root;
  stack[0].parent_offset = 0;
  ctx->root.type = type;
  ctx->root.name = "buffer dtype";
  ctx->root.offset = 0;
  ctx->head = stack;
  ctx->head->field = &ctx->root;
  ctx->fmt_offset = 0;
  ctx->head->parent_offset = 0;
  ctx->new_packmode = '@';
  ctx->enc_packmode = '@';
  ctx->new_count = 1;
  ctx->enc_count = 0;
  ctx->enc_type = 0;
  ctx->is_complex = 0;
  ctx->is_valid_array = 0;
  ctx->struct_alignment = 0;
  while (type->typegroup == 'S') {
    ++ctx->head;
    ctx->head->field = type->fields;
    ctx->head->parent_offset = 0;
    type = type->fields->type;
  }
}
static int __Pyx_BufFmt_ParseNumber(const char** ts) {
    int count;
    const char* t = *ts;
    if (*t < '0' || *t > '9') {
      return -1;
    } else {
        count = *t++ - '0';
        while (*t >= '0' && *t < '9') {
            count *= 10;
            count += *t++ - '0';
        }
    }
    *ts = t;
    return count;
}
static int __Pyx_BufFmt_ExpectNumber(const char **ts) {
    int number = __Pyx_BufFmt_ParseNumber(ts);
    if (number == -1)
        PyErr_Format(PyExc_ValueError,\
                     "Does not understand character buffer dtype format string ('%c')", **ts);
    return number;
}
static void __Pyx_BufFmt_RaiseUnexpectedChar(char ch) {
  PyErr_Format(PyExc_ValueError,
               "Unexpected format string character: '%c'", ch);
}
static const char* __Pyx_BufFmt_DescribeTypeChar(char ch, int is_complex) {
  switch (ch) {
    case 'c': return "'char'";
    case 'b': return "'signed char'";
    case 'B': return "'unsigned char'";
    case 'h': return "'short'";
    case 'H': return "'unsigned short'";
    case 'i': return "'int'";
    case 'I': return "'unsigned int'";
    case 'l': return "'long'";
    case 'L': return "'unsigned long'";
    case 'q': return "'long long'";
    case 'Q': return "'unsigned long long'";
    case 'f': return (is_complex ? "'complex float'" : "'float'");
    case 'd': return (is_complex ? "'complex double'" : "'double'");
    case 'g': return (is_complex ? "'complex long double'" : "'long double'");
    case 'T': return "a struct";
    case 'O': return "Python object";
    case 'P': return "a pointer";
    case 's': case 'p': return "a string";
    case 0: return "end";
    default: return "unparseable format string";
  }
}
static size_t __Pyx_BufFmt_TypeCharToStandardSize(char ch, int is_complex) {
  switch (ch) {
    case '?': case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return 2;
    case 'i': case 'I': case 'l': case 'L': return 4;
    case 'q': case 'Q': return 8;
    case 'f': return (is_complex ? 8 : 4);
    case 'd': return (is_complex ? 16 : 8);
    case 'g': {
      PyErr_SetString(PyExc_ValueError, "Python does not define a standard format string size for long double ('g')..");
      return 0;
    }
    case 'O': case 'P': return sizeof(void*);
    default:
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
}
static size_t __Pyx_BufFmt_TypeCharToNativeSize(char ch, int is_complex) {
  switch (ch) {
    case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return sizeof(short);
    case 'i': case 'I': return sizeof(int);
    case 'l': case 'L': return sizeof(long);
    #ifdef HAVE_LONG_LONG
    case 'q': case 'Q': return sizeof(PY_LONG_LONG);
    #endif
    case 'f': return sizeof(float) * (is_complex ? 2 : 1);
    case 'd': return sizeof(double) * (is_complex ? 2 : 1);
    case 'g': return sizeof(long double) * (is_complex ? 2 : 1);
    case 'O': case 'P': return sizeof(void*);
    default: {
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
  }
}
typedef struct { char c; short x; } __Pyx_st_short;
typedef struct { char c; int x; } __Pyx_st_int;
typedef struct { char c; long x; } __Pyx_st_long;
typedef struct { char c; float x; } __Pyx_st_float;
typedef struct { char c; double x; } __Pyx_st_double;
typedef struct { char c; long double x; } __Pyx_st_longdouble;
typedef struct { char c; void *x; } __Pyx_st_void_p;
#ifdef HAVE_LONG_LONG
typedef struct { char c; PY_LONG_LONG x; } __Pyx_st_longlong;
#endif
static size_t __Pyx_BufFmt_TypeCharToAlignment(char ch, CYTHON_UNUSED int is_complex) {
  switch (ch) {
    case '?': case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return sizeof(__Pyx_st_short) - sizeof(short);
    case 'i': case 'I': return sizeof(__Pyx_st_int) - sizeof(int);
    case 'l': case 'L': return sizeof(__Pyx_st_long) - sizeof(long);
#ifdef HAVE_LONG_LONG
    case 'q': case 'Q': return sizeof(__Pyx_st_longlong) - sizeof(PY_LONG_LONG);
#endif
    case 'f': return sizeof(__Pyx_st_float) - sizeof(float);
    case 'd': return sizeof(__Pyx_st_double) - sizeof(double);
    case 'g': return sizeof(__Pyx_st_longdouble) - sizeof(long double);
    case 'P': case 'O': return sizeof(__Pyx_st_void_p) - sizeof(void*);
    default:
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
}
/* These are for computing the padding at the end of the struct to align
   on the first member of the struct. This will probably the same as above,
   but we don't have any guarantees.
 */
typedef struct { short x; char c; } __Pyx_pad_short;
typedef struct { int x; char c; } __Pyx_pad_int;
typedef struct { long x; char c; } __Pyx_pad_long;
typedef struct { float x; char c; } __Pyx_pad_float;
typedef struct { double x; char c; } __Pyx_pad_double;
typedef struct { long double x; char c; } __Pyx_pad_longdouble;
typedef struct { void *x; char c; } __Pyx_pad_void_p;
#ifdef HAVE_LONG_LONG
typedef struct { PY_LONG_LONG x; char c; } __Pyx_pad_longlong;
#endif
static size_t __Pyx_BufFmt_TypeCharToPadding(char ch, CYTHON_UNUSED int is_complex) {
  switch (ch) {
    case '?': case 'c': case 'b': case 'B': case 's': case 'p': return 1;
    case 'h': case 'H': return sizeof(__Pyx_pad_short) - sizeof(short);
    case 'i': case 'I': return sizeof(__Pyx_pad_int) - sizeof(int);
    case 'l': case 'L': return sizeof(__Pyx_pad_long) - sizeof(long);
#ifdef HAVE_LONG_LONG
    case 'q': case 'Q': return sizeof(__Pyx_pad_longlong) - sizeof(PY_LONG_LONG);
#endif
    case 'f': return sizeof(__Pyx_pad_float) - sizeof(float);
    case 'd': return sizeof(__Pyx_pad_double) - sizeof(double);
    case 'g': return sizeof(__Pyx_pad_longdouble) - sizeof(long double);
    case 'P': case 'O': return sizeof(__Pyx_pad_void_p) - sizeof(void*);
    default:
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
}
static char __Pyx_BufFmt_TypeCharToGroup(char ch, int is_complex) {
  switch (ch) {
    case 'c':
        return 'H';
    case 'b': case 'h': case 'i':
    case 'l': case 'q': case 's': case 'p':
        return 'I';
    case 'B': case 'H': case 'I': case 'L': case 'Q':
        return 'U';
    case 'f': case 'd': case 'g':
        return (is_complex ? 'C' : 'R');
    case 'O':
        return 'O';
    case 'P':
        return 'P';
    default: {
      __Pyx_BufFmt_RaiseUnexpectedChar(ch);
      return 0;
    }
  }
}
static void __Pyx_BufFmt_RaiseExpected(__Pyx_BufFmt_Context* ctx) {
  if (ctx->head == NULL || ctx->head->field == &ctx->root) {
    const char* expected;
    const char* quote;
    if (ctx->head == NULL) {
      expected = "end";
      quote = "";
    } else {
      expected = ctx->head->field->type->name;
      quote = "'";
    }
    PyErr_Format(PyExc_ValueError,
                 "Buffer dtype mismatch, expected %s%s%s but got %s",
                 quote, expected, quote,
                 __Pyx_BufFmt_DescribeTypeChar(ctx->enc_type, ctx->is_complex));
  } else {
    __Pyx_StructField* field = ctx->head->field;
    __Pyx_StructField* parent = (ctx->head - 1)->field;
    PyErr_Format(PyExc_ValueError,
                 "Buffer dtype mismatch, expected '%s' but got %s in '%s.%s'",
                 field->type->name, __Pyx_BufFmt_DescribeTypeChar(ctx->enc_type, ctx->is_complex),
                 parent->type->name, field->name);
  }
}
static int __Pyx_BufFmt_ProcessTypeChunk(__Pyx_BufFmt_Context* ctx) {
  char group;
  size_t size, offset, arraysize = 1;
  if (ctx->enc_type == 0) return 0;
  if (ctx->head->field->type->arraysize[0]) {
    int i, ndim = 0;
    if (ctx->enc_type == 's' || ctx->enc_type == 'p') {
        ctx->is_valid_array = ctx->head->field->type->ndim == 1;
        ndim = 1;
        if (ctx->enc_count != ctx->head->field->type->arraysize[0]) {
            PyErr_Format(PyExc_ValueError,
                         "Expected a dimension of size %zu, got %zu",
                         ctx->head->field->type->arraysize[0], ctx->enc_count);
            return -1;
        }
    }
    if (!ctx->is_valid_array) {
      PyErr_Format(PyExc_ValueError, "Expected %d dimensions, got %d",
                   ctx->head->field->type->ndim, ndim);
      return -1;
    }
    for (i = 0; i < ctx->head->field->type->ndim; i++) {
      arraysize *= ctx->head->field->type->arraysize[i];
    }
    ctx->is_valid_array = 0;
    ctx->enc_count = 1;
  }
  group = __Pyx_BufFmt_TypeCharToGroup(ctx->enc_type, ctx->is_complex);
  do {
    __Pyx_StructField* field = ctx->head->field;
    __Pyx_TypeInfo* type = field->type;
    if (ctx->enc_packmode == '@' || ctx->enc_packmode == '^') {
      size = __Pyx_BufFmt_TypeCharToNativeSize(ctx->enc_type, ctx->is_complex);
    } else {
      size = __Pyx_BufFmt_TypeCharToStandardSize(ctx->enc_type, ctx->is_complex);
    }
    if (ctx->enc_packmode == '@') {
      size_t align_at = __Pyx_BufFmt_TypeCharToAlignment(ctx->enc_type, ctx->is_complex);
      size_t align_mod_offset;
      if (align_at == 0) return -1;
      align_mod_offset = ctx->fmt_offset % align_at;
      if (align_mod_offset > 0) ctx->fmt_offset += align_at - align_mod_offset;
      if (ctx->struct_alignment == 0)
          ctx->struct_alignment = __Pyx_BufFmt_TypeCharToPadding(ctx->enc_type,
                                                                 ctx->is_complex);
    }
    if (type->size != size || type->typegroup != group) {
      if (type->typegroup == 'C' && type->fields != NULL) {
        size_t parent_offset = ctx->head->parent_offset + field->offset;
        ++ctx->head;
        ctx->head->field = type->fields;
        ctx->head->parent_offset = parent_offset;
        continue;
      }
      if ((type->typegroup == 'H' || group == 'H') && type->size == size) {
      } else {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return -1;
      }
    }
    offset = ctx->head->parent_offset + field->offset;
    if (ctx->fmt_offset != offset) {
      PyErr_Format(PyExc_ValueError,
                   "Buffer dtype mismatch; next field is at offset %" CYTHON_FORMAT_SSIZE_T "d but %" CYTHON_FORMAT_SSIZE_T "d expected",
                   (Py_ssize_t)ctx->fmt_offset, (Py_ssize_t)offset);
      return -1;
    }
    ctx->fmt_offset += size;
    if (arraysize)
      ctx->fmt_offset += (arraysize - 1) * size;
    --ctx->enc_count;
    while (1) {
      if (field == &ctx->root) {
        ctx->head = NULL;
        if (ctx->enc_count != 0) {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return -1;
        }
        break;
      }
      ctx->head->field = ++field;
      if (field->type == NULL) {
        --ctx->head;
        field = ctx->head->field;
        continue;
      } else if (field->type->typegroup == 'S') {
        size_t parent_offset = ctx->head->parent_offset + field->offset;
        if (field->type->fields->type == NULL) continue;
        field = field->type->fields;
        ++ctx->head;
        ctx->head->field = field;
        ctx->head->parent_offset = parent_offset;
        break;
      } else {
        break;
      }
    }
  } while (ctx->enc_count);
  ctx->enc_type = 0;
  ctx->is_complex = 0;
  return 0;
}
static CYTHON_INLINE PyObject *
__pyx_buffmt_parse_array(__Pyx_BufFmt_Context* ctx, const char** tsp)
{
    const char *ts = *tsp;
    int i = 0, number;
    int ndim = ctx->head->field->type->ndim;
;
    ++ts;
    if (ctx->new_count != 1) {
        PyErr_SetString(PyExc_ValueError,
                        "Cannot handle repeated arrays in format string");
        return NULL;
    }
    if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
    while (*ts && *ts != ')') {
        switch (*ts) {
            case ' ': case '\f': case '\r': case '\n': case '\t': case '\v':  continue;
            default:  break;
        }
        number = __Pyx_BufFmt_ExpectNumber(&ts);
        if (number == -1) return NULL;
        if (i < ndim && (size_t) number != ctx->head->field->type->arraysize[i])
            return PyErr_Format(PyExc_ValueError,
                        "Expected a dimension of size %zu, got %d",
                        ctx->head->field->type->arraysize[i], number);
        if (*ts != ',' && *ts != ')')
            return PyErr_Format(PyExc_ValueError,
                                "Expected a comma in format string, got '%c'", *ts);
        if (*ts == ',') ts++;
        i++;
    }
    if (i != ndim)
        return PyErr_Format(PyExc_ValueError, "Expected %d dimension(s), got %d",
                            ctx->head->field->type->ndim, i);
    if (!*ts) {
        PyErr_SetString(PyExc_ValueError,
                        "Unexpected end of format string, expected ')'");
        return NULL;
    }
    ctx->is_valid_array = 1;
    ctx->new_count = 1;
    *tsp = ++ts;
    return Py_None;
}
static const char* __Pyx_BufFmt_CheckString(__Pyx_BufFmt_Context* ctx, const char* ts) {
  int got_Z = 0;
  while (1) {
    switch(*ts) {
      case 0:
        if (ctx->enc_type != 0 && ctx->head == NULL) {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return NULL;
        }
        if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
        if (ctx->head != NULL) {
          __Pyx_BufFmt_RaiseExpected(ctx);
          return NULL;
        }
        return ts;
      case ' ':
      case '\r':
      case '\n':
        ++ts;
        break;
      case '<':
        if (!__Pyx_IsLittleEndian()) {
          PyErr_SetString(PyExc_ValueError, "Little-endian buffer not supported on big-endian compiler");
          return NULL;
        }
        ctx->new_packmode = '=';
        ++ts;
        break;
      case '>':
      case '!':
        if (__Pyx_IsLittleEndian()) {
          PyErr_SetString(PyExc_ValueError, "Big-endian buffer not supported on little-endian compiler");
          return NULL;
        }
        ctx->new_packmode = '=';
        ++ts;
        break;
      case '=':
      case '@':
      case '^':
        ctx->new_packmode = *ts++;
        break;
      case 'T':
        {
          const char* ts_after_sub;
          size_t i, struct_count = ctx->new_count;
          size_t struct_alignment = ctx->struct_alignment;
          ctx->new_count = 1;
          ++ts;
          if (*ts != '{') {
            PyErr_SetString(PyExc_ValueError, "Buffer acquisition: Expected '{' after 'T'");
            return NULL;
          }
          if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
          ctx->enc_type = 0;
          ctx->enc_count = 0;
          ctx->struct_alignment = 0;
          ++ts;
          ts_after_sub = ts;
          for (i = 0; i != struct_count; ++i) {
            ts_after_sub = __Pyx_BufFmt_CheckString(ctx, ts);
            if (!ts_after_sub) return NULL;
          }
          ts = ts_after_sub;
          if (struct_alignment) ctx->struct_alignment = struct_alignment;
        }
        break;
      case '}':
        {
          size_t alignment = ctx->struct_alignment;
          ++ts;
          if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
          ctx->enc_type = 0;
          if (alignment && ctx->fmt_offset % alignment) {
            ctx->fmt_offset += alignment - (ctx->fmt_offset % alignment);
          }
        }
        return ts;
      case 'x':
        if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
        ctx->fmt_offset += ctx->new_count;
        ctx->new_count = 1;
        ctx->enc_count = 0;
        ctx->enc_type = 0;
        ctx->enc_packmode = ctx->new_packmode;
        ++ts;
        break;
      case 'Z':
        got_Z = 1;
        ++ts;
        if (*ts != 'f' && *ts != 'd' && *ts != 'g') {
          __Pyx_BufFmt_RaiseUnexpectedChar('Z');
          return NULL;
        }
      case 'c': case 'b': case 'B': case 'h': case 'H': case 'i': case 'I':
      case 'l': case 'L': case 'q': case 'Q':
      case 'f': case 'd': case 'g':
      case 'O': case 'p':
        if (ctx->enc_type == *ts && got_Z == ctx->is_complex &&
            ctx->enc_packmode == ctx->new_packmode) {
          ctx->enc_count += ctx->new_count;
          ctx->new_count = 1;
          got_Z = 0;
          ++ts;
          break;
        }
      case 's':
        if (__Pyx_BufFmt_ProcessTypeChunk(ctx) == -1) return NULL;
        ctx->enc_count = ctx->new_count;
        ctx->enc_packmode = ctx->new_packmode;
        ctx->enc_type = *ts;
        ctx->is_complex = got_Z;
        ++ts;
        ctx->new_count = 1;
        got_Z = 0;
        break;
      case ':':
        ++ts;
        while(*ts != ':') ++ts;
        ++ts;
        break;
      case '(':
        if (!__pyx_buffmt_parse_array(ctx, &ts)) return NULL;
        break;
      default:
        {
          int number = __Pyx_BufFmt_ExpectNumber(&ts);
          if (number == -1) return NULL;
          ctx->new_count = (size_t)number;
        }
    }
  }
}
static CYTHON_INLINE void __Pyx_ZeroBuffer(Py_buffer* buf) {
  buf->buf = NULL;
  buf->obj = NULL;
  buf->strides = __Pyx_zeros;
  buf->shape = __Pyx_zeros;
  buf->suboffsets = __Pyx_minusones;
}
static CYTHON_INLINE int __Pyx_GetBufferAndValidate(
        Py_buffer* buf, PyObject* obj,  __Pyx_TypeInfo* dtype, int flags,
        int nd, int cast, __Pyx_BufFmt_StackElem* stack)
{
  if (obj == Py_None || obj == NULL) {
    __Pyx_ZeroBuffer(buf);
    return 0;
  }
  buf->buf = NULL;
  if (__Pyx_GetBuffer(obj, buf, flags) == -1) goto fail;
  if (buf->ndim != nd) {
    PyErr_Format(PyExc_ValueError,
                 "Buffer has wrong number of dimensions (expected %d, got %d)",
                 nd, buf->ndim);
    goto fail;
  }
  if (!cast) {
    __Pyx_BufFmt_Context ctx;
    __Pyx_BufFmt_Init(&ctx, stack, dtype);
    if (!__Pyx_BufFmt_CheckString(&ctx, buf->format)) goto fail;
  }
  if ((unsigned)buf->itemsize != dtype->size) {
    PyErr_Format(PyExc_ValueError,
      "Item size of buffer (%" CYTHON_FORMAT_SSIZE_T "d byte%s) does not match size of '%s' (%" CYTHON_FORMAT_SSIZE_T "d byte%s)",
      buf->itemsize, (buf->itemsize > 1) ? "s" : "",
      dtype->name, (Py_ssize_t)dtype->size, (dtype->size > 1) ? "s" : "");
    goto fail;
  }
  if (buf->suboffsets == NULL) buf->suboffsets = __Pyx_minusones;
  return 0;
fail:;
  __Pyx_ZeroBuffer(buf);
  return -1;
}
static CYTHON_INLINE void __Pyx_SafeReleaseBuffer(Py_buffer* info) {
  if (info->buf == NULL) return;
  if (info->suboffsets == __Pyx_minusones) info->suboffsets = NULL;
  __Pyx_ReleaseBuffer(info);
}

static void __Pyx_WriteUnraisable(const char *name, CYTHON_UNUSED int clineno,
                                  CYTHON_UNUSED int lineno, CYTHON_UNUSED const char *filename,
                                  int full_traceback, CYTHON_UNUSED int nogil) {
    PyObject *old_exc, *old_val, *old_tb;
    PyObject *ctx;
#ifdef WITH_THREAD
    PyGILState_STATE state;
    if (nogil)
        state = PyGILState_Ensure();
#endif
    __Pyx_ErrFetch(&old_exc, &old_val, &old_tb);
    if (full_traceback) {
        Py_XINCREF(old_exc);
        Py_XINCREF(old_val);
        Py_XINCREF(old_tb);
        __Pyx_ErrRestore(old_exc, old_val, old_tb);
        PyErr_PrintEx(1);
    }
    #if PY_MAJOR_VERSION < 3
    ctx = PyString_FromString(name);
    #else
    ctx = PyUnicode_FromString(name);
    #endif
    __Pyx_ErrRestore(old_exc, old_val, old_tb);
    if (!ctx) {
        PyErr_WriteUnraisable(Py_None);
    } else {
        PyErr_WriteUnraisable(ctx);
        Py_DECREF(ctx);
    }
#ifdef WITH_THREAD
    if (nogil)
        PyGILState_Release(state);
#endif
}

static void __Pyx_RaiseBufferIndexError(int axis) {
  PyErr_Format(PyExc_IndexError,
     "Out of bounds on buffer access (axis %d)", axis);
}

static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
    PyErr_Format(PyExc_ValueError,
                 "too many values to unpack (expected %" CYTHON_FORMAT_SSIZE_T "d)", expected);
}

static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
    PyErr_Format(PyExc_ValueError,
                 "need more than %" CYTHON_FORMAT_SSIZE_T "d value%.1s to unpack",
                 index, (index == 1) ? "" : "s");
}

static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void) {
    PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
}

static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
    PyObject *empty_list = 0;
    PyObject *module = 0;
    PyObject *global_dict = 0;
    PyObject *empty_dict = 0;
    PyObject *list;
    #if PY_VERSION_HEX < 0x03030000
    PyObject *py_import;
    py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s_import);
    if (!py_import)
        goto bad;
    #endif
    if (from_list)
        list = from_list;
    else {
        empty_list = PyList_New(0);
        if (!empty_list)
            goto bad;
        list = empty_list;
    }
    global_dict = PyModule_GetDict(__pyx_m);
    if (!global_dict)
        goto bad;
    empty_dict = PyDict_New();
    if (!empty_dict)
        goto bad;
    {
        #if PY_MAJOR_VERSION >= 3
        if (level == -1) {
            if (strchr(__Pyx_MODULE_NAME, '.')) {
                #if PY_VERSION_HEX < 0x03030000
                PyObject *py_level = PyInt_FromLong(1);
                if (!py_level)
                    goto bad;
                module = PyObject_CallFunctionObjArgs(py_import,
                    name, global_dict, empty_dict, list, py_level, NULL);
                Py_DECREF(py_level);
                #else
                module = PyImport_ImportModuleLevelObject(
                    name, global_dict, empty_dict, list, 1);
                #endif
                if (!module) {
                    if (!PyErr_ExceptionMatches(PyExc_ImportError))
                        goto bad;
                    PyErr_Clear();
                }
            }
            level = 0;
        }
        #endif
        if (!module) {
            #if PY_VERSION_HEX < 0x03030000
            PyObject *py_level = PyInt_FromLong(level);
            if (!py_level)
                goto bad;
            module = PyObject_CallFunctionObjArgs(py_import,
                name, global_dict, empty_dict, list, py_level, NULL);
            Py_DECREF(py_level);
            #else
            module = PyImport_ImportModuleLevelObject(
                name, global_dict, empty_dict, list, level);
            #endif
        }
    }
bad:
    #if PY_VERSION_HEX < 0x03030000
    Py_XDECREF(py_import);
    #endif
    Py_XDECREF(empty_list);
    Py_XDECREF(empty_dict);
    return module;
}

static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name) {
    PyObject* value = __Pyx_PyObject_GetAttrStr(module, name);
    if (unlikely(!value) && PyErr_ExceptionMatches(PyExc_AttributeError)) {
        PyErr_Format(PyExc_ImportError,
        #if PY_MAJOR_VERSION < 3
            "cannot import name %.230s", PyString_AS_STRING(name));
        #else
            "cannot import name %S", name);
        #endif
    }
    return value;
}

static PyObject *__Pyx_CalculateMetaclass(PyTypeObject *metaclass, PyObject *bases) {
    Py_ssize_t i, nbases = PyTuple_GET_SIZE(bases);
    for (i=0; i < nbases; i++) {
        PyTypeObject *tmptype;
        PyObject *tmp = PyTuple_GET_ITEM(bases, i);
        tmptype = Py_TYPE(tmp);
#if PY_MAJOR_VERSION < 3
        if (tmptype == &PyClass_Type)
            continue;
#endif
        if (!metaclass) {
            metaclass = tmptype;
            continue;
        }
        if (PyType_IsSubtype(metaclass, tmptype))
            continue;
        if (PyType_IsSubtype(tmptype, metaclass)) {
            metaclass = tmptype;
            continue;
        }
        PyErr_SetString(PyExc_TypeError,
                        "metaclass conflict: "
                        "the metaclass of a derived class "
                        "must be a (non-strict) subclass "
                        "of the metaclasses of all its bases");
        return NULL;
    }
    if (!metaclass) {
#if PY_MAJOR_VERSION < 3
        metaclass = &PyClass_Type;
#else
        metaclass = &PyType_Type;
#endif
    }
    Py_INCREF((PyObject*) metaclass);
    return (PyObject*) metaclass;
}

static PyTypeObject* __Pyx_FetchCommonType(PyTypeObject* type) {
    PyObject* fake_module;
    PyTypeObject* cached_type = NULL;
    fake_module = PyImport_AddModule((char*) "_cython_" CYTHON_ABI);
    if (!fake_module) return NULL;
    Py_INCREF(fake_module);
    cached_type = (PyTypeObject*) PyObject_GetAttrString(fake_module, type->tp_name);
    if (cached_type) {
        if (!PyType_Check((PyObject*)cached_type)) {
            PyErr_Format(PyExc_TypeError,
                "Shared Cython type %.200s is not a type object",
                type->tp_name);
            goto bad;
        }
        if (cached_type->tp_basicsize != type->tp_basicsize) {
            PyErr_Format(PyExc_TypeError,
                "Shared Cython type %.200s has the wrong size, try recompiling",
                type->tp_name);
            goto bad;
        }
    } else {
        if (!PyErr_ExceptionMatches(PyExc_AttributeError)) goto bad;
        PyErr_Clear();
        if (PyType_Ready(type) < 0) goto bad;
        if (PyObject_SetAttrString(fake_module, type->tp_name, (PyObject*) type) < 0)
            goto bad;
        Py_INCREF(type);
        cached_type = type;
    }
done:
    Py_DECREF(fake_module);
    return cached_type;
bad:
    Py_XDECREF(cached_type);
    cached_type = NULL;
    goto done;
}

static PyObject *
__Pyx_CyFunction_get_doc(__pyx_CyFunctionObject *op, CYTHON_UNUSED void *closure)
{
    if (unlikely(op->func_doc == NULL)) {
        if (op->func.m_ml->ml_doc) {
#if PY_MAJOR_VERSION >= 3
            op->func_doc = PyUnicode_FromString(op->func.m_ml->ml_doc);
#else
            op->func_doc = PyString_FromString(op->func.m_ml->ml_doc);
#endif
            if (unlikely(op->func_doc == NULL))
                return NULL;
        } else {
            Py_INCREF(Py_None);
            return Py_None;
        }
    }
    Py_INCREF(op->func_doc);
    return op->func_doc;
}
static int
__Pyx_CyFunction_set_doc(__pyx_CyFunctionObject *op, PyObject *value)
{
    PyObject *tmp = op->func_doc;
    if (value == NULL) {
        value = Py_None;
    }
    Py_INCREF(value);
    op->func_doc = value;
    Py_XDECREF(tmp);
    return 0;
}
static PyObject *
__Pyx_CyFunction_get_name(__pyx_CyFunctionObject *op)
{
    if (unlikely(op->func_name == NULL)) {
#if PY_MAJOR_VERSION >= 3
        op->func_name = PyUnicode_InternFromString(op->func.m_ml->ml_name);
#else
        op->func_name = PyString_InternFromString(op->func.m_ml->ml_name);
#endif
        if (unlikely(op->func_name == NULL))
            return NULL;
    }
    Py_INCREF(op->func_name);
    return op->func_name;
}
static int
__Pyx_CyFunction_set_name(__pyx_CyFunctionObject *op, PyObject *value)
{
    PyObject *tmp;
#if PY_MAJOR_VERSION >= 3
    if (unlikely(value == NULL || !PyUnicode_Check(value))) {
#else
    if (unlikely(value == NULL || !PyString_Check(value))) {
#endif
        PyErr_SetString(PyExc_TypeError,
                        "__name__ must be set to a string object");
        return -1;
    }
    tmp = op->func_name;
    Py_INCREF(value);
    op->func_name = value;
    Py_XDECREF(tmp);
    return 0;
}
static PyObject *
__Pyx_CyFunction_get_qualname(__pyx_CyFunctionObject *op)
{
    Py_INCREF(op->func_qualname);
    return op->func_qualname;
}
static int
__Pyx_CyFunction_set_qualname(__pyx_CyFunctionObject *op, PyObject *value)
{
    PyObject *tmp;
#if PY_MAJOR_VERSION >= 3
    if (unlikely(value == NULL || !PyUnicode_Check(value))) {
#else
    if (unlikely(value == NULL || !PyString_Check(value))) {
#endif
        PyErr_SetString(PyExc_TypeError,
                        "__qualname__ must be set to a string object");
        return -1;
    }
    tmp = op->func_qualname;
    Py_INCREF(value);
    op->func_qualname = value;
    Py_XDECREF(tmp);
    return 0;
}
static PyObject *
__Pyx_CyFunction_get_self(__pyx_CyFunctionObject *m, CYTHON_UNUSED void *closure)
{
    PyObject *self;
    self = m->func_closure;
    if (self == NULL)
        self = Py_None;
    Py_INCREF(self);
    return self;
}
static PyObject *
__Pyx_CyFunction_get_dict(__pyx_CyFunctionObject *op)
{
    if (unlikely(op->func_dict == NULL)) {
        op->func_dict = PyDict_New();
        if (unlikely(op->func_dict == NULL))
            return NULL;
    }
    Py_INCREF(op->func_dict);
    return op->func_dict;
}
static int
__Pyx_CyFunction_set_dict(__pyx_CyFunctionObject *op, PyObject *value)
{
    PyObject *tmp;
    if (unlikely(value == NULL)) {
        PyErr_SetString(PyExc_TypeError,
               "function's dictionary may not be deleted");
        return -1;
    }
    if (unlikely(!PyDict_Check(value))) {
        PyErr_SetString(PyExc_TypeError,
               "setting function's dictionary to a non-dict");
        return -1;
    }
    tmp = op->func_dict;
    Py_INCREF(value);
    op->func_dict = value;
    Py_XDECREF(tmp);
    return 0;
}
static PyObject *
__Pyx_CyFunction_get_globals(__pyx_CyFunctionObject *op)
{
    Py_INCREF(op->func_globals);
    return op->func_globals;
}
static PyObject *
__Pyx_CyFunction_get_closure(CYTHON_UNUSED __pyx_CyFunctionObject *op)
{
    Py_INCREF(Py_None);
    return Py_None;
}
static PyObject *
__Pyx_CyFunction_get_code(__pyx_CyFunctionObject *op)
{
    PyObject* result = (op->func_code) ? op->func_code : Py_None;
    Py_INCREF(result);
    return result;
}
static int
__Pyx_CyFunction_init_defaults(__pyx_CyFunctionObject *op) {
    int result = 0;
    PyObject *res = op->defaults_getter((PyObject *) op);
    if (unlikely(!res))
        return -1;
    #if CYTHON_COMPILING_IN_CPYTHON
    op->defaults_tuple = PyTuple_GET_ITEM(res, 0);
    Py_INCREF(op->defaults_tuple);
    op->defaults_kwdict = PyTuple_GET_ITEM(res, 1);
    Py_INCREF(op->defaults_kwdict);
    #else
    op->defaults_tuple = PySequence_ITEM(res, 0);
    if (unlikely(!op->defaults_tuple)) result = -1;
    else {
        op->defaults_kwdict = PySequence_ITEM(res, 1);
        if (unlikely(!op->defaults_kwdict)) result = -1;
    }
    #endif
    Py_DECREF(res);
    return result;
}
static int
__Pyx_CyFunction_set_defaults(__pyx_CyFunctionObject *op, PyObject* value) {
    PyObject* tmp;
    if (!value) {
        value = Py_None;
    } else if (value != Py_None && !PyTuple_Check(value)) {
        PyErr_SetString(PyExc_TypeError,
                        "__defaults__ must be set to a tuple object");
        return -1;
    }
    Py_INCREF(value);
    tmp = op->defaults_tuple;
    op->defaults_tuple = value;
    Py_XDECREF(tmp);
    return 0;
}
static PyObject *
__Pyx_CyFunction_get_defaults(__pyx_CyFunctionObject *op) {
    PyObject* result = op->defaults_tuple;
    if (unlikely(!result)) {
        if (op->defaults_getter) {
            if (__Pyx_CyFunction_init_defaults(op) < 0) return NULL;
            result = op->defaults_tuple;
        } else {
            result = Py_None;
        }
    }
    Py_INCREF(result);
    return result;
}
static int
__Pyx_CyFunction_set_kwdefaults(__pyx_CyFunctionObject *op, PyObject* value) {
    PyObject* tmp;
    if (!value) {
        value = Py_None;
    } else if (value != Py_None && !PyDict_Check(value)) {
        PyErr_SetString(PyExc_TypeError,
                        "__kwdefaults__ must be set to a dict object");
        return -1;
    }
    Py_INCREF(value);
    tmp = op->defaults_kwdict;
    op->defaults_kwdict = value;
    Py_XDECREF(tmp);
    return 0;
}
static PyObject *
__Pyx_CyFunction_get_kwdefaults(__pyx_CyFunctionObject *op) {
    PyObject* result = op->defaults_kwdict;
    if (unlikely(!result)) {
        if (op->defaults_getter) {
            if (__Pyx_CyFunction_init_defaults(op) < 0) return NULL;
            result = op->defaults_kwdict;
        } else {
            result = Py_None;
        }
    }
    Py_INCREF(result);
    return result;
}
static int
__Pyx_CyFunction_set_annotations(__pyx_CyFunctionObject *op, PyObject* value) {
    PyObject* tmp;
    if (!value || value == Py_None) {
        value = NULL;
    } else if (!PyDict_Check(value)) {
        PyErr_SetString(PyExc_TypeError,
                        "__annotations__ must be set to a dict object");
        return -1;
    }
    Py_XINCREF(value);
    tmp = op->func_annotations;
    op->func_annotations = value;
    Py_XDECREF(tmp);
    return 0;
}
static PyObject *
__Pyx_CyFunction_get_annotations(__pyx_CyFunctionObject *op) {
    PyObject* result = op->func_annotations;
    if (unlikely(!result)) {
        result = PyDict_New();
        if (unlikely(!result)) return NULL;
        op->func_annotations = result;
    }
    Py_INCREF(result);
    return result;
}
static PyGetSetDef __pyx_CyFunction_getsets[] = {
    {(char *) "func_doc", (getter)__Pyx_CyFunction_get_doc, (setter)__Pyx_CyFunction_set_doc, 0, 0},
    {(char *) "__doc__",  (getter)__Pyx_CyFunction_get_doc, (setter)__Pyx_CyFunction_set_doc, 0, 0},
    {(char *) "func_name", (getter)__Pyx_CyFunction_get_name, (setter)__Pyx_CyFunction_set_name, 0, 0},
    {(char *) "__name__", (getter)__Pyx_CyFunction_get_name, (setter)__Pyx_CyFunction_set_name, 0, 0},
    {(char *) "__qualname__", (getter)__Pyx_CyFunction_get_qualname, (setter)__Pyx_CyFunction_set_qualname, 0, 0},
    {(char *) "__self__", (getter)__Pyx_CyFunction_get_self, 0, 0, 0},
    {(char *) "func_dict", (getter)__Pyx_CyFunction_get_dict, (setter)__Pyx_CyFunction_set_dict, 0, 0},
    {(char *) "__dict__", (getter)__Pyx_CyFunction_get_dict, (setter)__Pyx_CyFunction_set_dict, 0, 0},
    {(char *) "func_globals", (getter)__Pyx_CyFunction_get_globals, 0, 0, 0},
    {(char *) "__globals__", (getter)__Pyx_CyFunction_get_globals, 0, 0, 0},
    {(char *) "func_closure", (getter)__Pyx_CyFunction_get_closure, 0, 0, 0},
    {(char *) "__closure__", (getter)__Pyx_CyFunction_get_closure, 0, 0, 0},
    {(char *) "func_code", (getter)__Pyx_CyFunction_get_code, 0, 0, 0},
    {(char *) "__code__", (getter)__Pyx_CyFunction_get_code, 0, 0, 0},
    {(char *) "func_defaults", (getter)__Pyx_CyFunction_get_defaults, (setter)__Pyx_CyFunction_set_defaults, 0, 0},
    {(char *) "__defaults__", (getter)__Pyx_CyFunction_get_defaults, (setter)__Pyx_CyFunction_set_defaults, 0, 0},
    {(char *) "__kwdefaults__", (getter)__Pyx_CyFunction_get_kwdefaults, (setter)__Pyx_CyFunction_set_kwdefaults, 0, 0},
    {(char *) "__annotations__", (getter)__Pyx_CyFunction_get_annotations, (setter)__Pyx_CyFunction_set_annotations, 0, 0},
    {0, 0, 0, 0, 0}
};
static PyMemberDef __pyx_CyFunction_members[] = {
    {(char *) "__module__", T_OBJECT, offsetof(__pyx_CyFunctionObject, func.m_module), PY_WRITE_RESTRICTED, 0},
    {0, 0, 0,  0, 0}
};
static PyObject *
__Pyx_CyFunction_reduce(__pyx_CyFunctionObject *m, CYTHON_UNUSED PyObject *args)
{
#if PY_MAJOR_VERSION >= 3
    return PyUnicode_FromString(m->func.m_ml->ml_name);
#else
    return PyString_FromString(m->func.m_ml->ml_name);
#endif
}
static PyMethodDef __pyx_CyFunction_methods[] = {
    {"__reduce__", (PyCFunction)__Pyx_CyFunction_reduce, METH_VARARGS, 0},
    {0, 0, 0, 0}
};
#if PY_VERSION_HEX < 0x030500A0
#define __Pyx_CyFunction_weakreflist(cyfunc) ((cyfunc)->func_weakreflist)
#else
#define __Pyx_CyFunction_weakreflist(cyfunc) ((cyfunc)->func.m_weakreflist)
#endif
static PyObject *__Pyx_CyFunction_New(PyTypeObject *type, PyMethodDef *ml, int flags, PyObject* qualname,
                                      PyObject *closure, PyObject *module, PyObject* globals, PyObject* code) {
    __pyx_CyFunctionObject *op = PyObject_GC_New(__pyx_CyFunctionObject, type);
    if (op == NULL)
        return NULL;
    op->flags = flags;
    __Pyx_CyFunction_weakreflist(op) = NULL;
    op->func.m_ml = ml;
    op->func.m_self = (PyObject *) op;
    Py_XINCREF(closure);
    op->func_closure = closure;
    Py_XINCREF(module);
    op->func.m_module = module;
    op->func_dict = NULL;
    op->func_name = NULL;
    Py_INCREF(qualname);
    op->func_qualname = qualname;
    op->func_doc = NULL;
    op->func_classobj = NULL;
    op->func_globals = globals;
    Py_INCREF(op->func_globals);
    Py_XINCREF(code);
    op->func_code = code;
    op->defaults_pyobjects = 0;
    op->defaults = NULL;
    op->defaults_tuple = NULL;
    op->defaults_kwdict = NULL;
    op->defaults_getter = NULL;
    op->func_annotations = NULL;
    PyObject_GC_Track(op);
    return (PyObject *) op;
}
static int
__Pyx_CyFunction_clear(__pyx_CyFunctionObject *m)
{
    Py_CLEAR(m->func_closure);
    Py_CLEAR(m->func.m_module);
    Py_CLEAR(m->func_dict);
    Py_CLEAR(m->func_name);
    Py_CLEAR(m->func_qualname);
    Py_CLEAR(m->func_doc);
    Py_CLEAR(m->func_globals);
    Py_CLEAR(m->func_code);
    Py_CLEAR(m->func_classobj);
    Py_CLEAR(m->defaults_tuple);
    Py_CLEAR(m->defaults_kwdict);
    Py_CLEAR(m->func_annotations);
    if (m->defaults) {
        PyObject **pydefaults = __Pyx_CyFunction_Defaults(PyObject *, m);
        int i;
        for (i = 0; i < m->defaults_pyobjects; i++)
            Py_XDECREF(pydefaults[i]);
        PyMem_Free(m->defaults);
        m->defaults = NULL;
    }
    return 0;
}
static void __Pyx_CyFunction_dealloc(__pyx_CyFunctionObject *m)
{
    PyObject_GC_UnTrack(m);
    if (__Pyx_CyFunction_weakreflist(m) != NULL)
        PyObject_ClearWeakRefs((PyObject *) m);
    __Pyx_CyFunction_clear(m);
    PyObject_GC_Del(m);
}
static int __Pyx_CyFunction_traverse(__pyx_CyFunctionObject *m, visitproc visit, void *arg)
{
    Py_VISIT(m->func_closure);
    Py_VISIT(m->func.m_module);
    Py_VISIT(m->func_dict);
    Py_VISIT(m->func_name);
    Py_VISIT(m->func_qualname);
    Py_VISIT(m->func_doc);
    Py_VISIT(m->func_globals);
    Py_VISIT(m->func_code);
    Py_VISIT(m->func_classobj);
    Py_VISIT(m->defaults_tuple);
    Py_VISIT(m->defaults_kwdict);
    if (m->defaults) {
        PyObject **pydefaults = __Pyx_CyFunction_Defaults(PyObject *, m);
        int i;
        for (i = 0; i < m->defaults_pyobjects; i++)
            Py_VISIT(pydefaults[i]);
    }
    return 0;
}
static PyObject *__Pyx_CyFunction_descr_get(PyObject *func, PyObject *obj, PyObject *type)
{
    __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
    if (m->flags & __Pyx_CYFUNCTION_STATICMETHOD) {
        Py_INCREF(func);
        return func;
    }
    if (m->flags & __Pyx_CYFUNCTION_CLASSMETHOD) {
        if (type == NULL)
            type = (PyObject *)(Py_TYPE(obj));
        return __Pyx_PyMethod_New(func, type, (PyObject *)(Py_TYPE(type)));
    }
    if (obj == Py_None)
        obj = NULL;
    return __Pyx_PyMethod_New(func, obj, type);
}
static PyObject*
__Pyx_CyFunction_repr(__pyx_CyFunctionObject *op)
{
#if PY_MAJOR_VERSION >= 3
    return PyUnicode_FromFormat("<cyfunction %U at %p>",
                                op->func_qualname, (void *)op);
#else
    return PyString_FromFormat("<cyfunction %s at %p>",
                               PyString_AsString(op->func_qualname), (void *)op);
#endif
}
#if CYTHON_COMPILING_IN_PYPY
static PyObject * __Pyx_CyFunction_Call(PyObject *func, PyObject *arg, PyObject *kw) {
    PyCFunctionObject* f = (PyCFunctionObject*)func;
    PyCFunction meth = f->m_ml->ml_meth;
    PyObject *self = f->m_self;
    Py_ssize_t size;
    switch (f->m_ml->ml_flags & (METH_VARARGS | METH_KEYWORDS | METH_NOARGS | METH_O)) {
    case METH_VARARGS:
        if (likely(kw == NULL || PyDict_Size(kw) == 0))
            return (*meth)(self, arg);
        break;
    case METH_VARARGS | METH_KEYWORDS:
        return (*(PyCFunctionWithKeywords)meth)(self, arg, kw);
    case METH_NOARGS:
        if (likely(kw == NULL || PyDict_Size(kw) == 0)) {
            size = PyTuple_GET_SIZE(arg);
            if (likely(size == 0))
                return (*meth)(self, NULL);
            PyErr_Format(PyExc_TypeError,
                "%.200s() takes no arguments (%" CYTHON_FORMAT_SSIZE_T "d given)",
                f->m_ml->ml_name, size);
            return NULL;
        }
        break;
    case METH_O:
        if (likely(kw == NULL || PyDict_Size(kw) == 0)) {
            size = PyTuple_GET_SIZE(arg);
            if (likely(size == 1)) {
                PyObject *result, *arg0 = PySequence_ITEM(arg, 0);
                if (unlikely(!arg0)) return NULL;
                result = (*meth)(self, arg0);
                Py_DECREF(arg0);
                return result;
            }
            PyErr_Format(PyExc_TypeError,
                "%.200s() takes exactly one argument (%" CYTHON_FORMAT_SSIZE_T "d given)",
                f->m_ml->ml_name, size);
            return NULL;
        }
        break;
    default:
        PyErr_SetString(PyExc_SystemError, "Bad call flags in "
                        "__Pyx_CyFunction_Call. METH_OLDARGS is no "
                        "longer supported!");
        return NULL;
    }
    PyErr_Format(PyExc_TypeError, "%.200s() takes no keyword arguments",
                 f->m_ml->ml_name);
    return NULL;
}
#else
static PyObject * __Pyx_CyFunction_Call(PyObject *func, PyObject *arg, PyObject *kw) {
	return PyCFunction_Call(func, arg, kw);
}
#endif
static PyTypeObject __pyx_CyFunctionType_type = {
    PyVarObject_HEAD_INIT(0, 0)
    "cython_function_or_method",
    sizeof(__pyx_CyFunctionObject),
    0,
    (destructor) __Pyx_CyFunction_dealloc,
    0,
    0,
    0,
#if PY_MAJOR_VERSION < 3
    0,
#else
    0,
#endif
    (reprfunc) __Pyx_CyFunction_repr,
    0,
    0,
    0,
    0,
    __Pyx_CyFunction_Call,
    0,
    0,
    0,
    0,
    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,
    0,
    (traverseproc) __Pyx_CyFunction_traverse,
    (inquiry) __Pyx_CyFunction_clear,
    0,
#if PY_VERSION_HEX < 0x030500A0
    offsetof(__pyx_CyFunctionObject, func_weakreflist),
#else
    offsetof(PyCFunctionObject, m_weakreflist),
#endif
    0,
    0,
    __pyx_CyFunction_methods,
    __pyx_CyFunction_members,
    __pyx_CyFunction_getsets,
    0,
    0,
    __Pyx_CyFunction_descr_get,
    0,
    offsetof(__pyx_CyFunctionObject, func_dict),
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
#if PY_VERSION_HEX >= 0x030400a1
    0,
#endif
};
static int __pyx_CyFunction_init(void) {
#if !CYTHON_COMPILING_IN_PYPY
    __pyx_CyFunctionType_type.tp_call = PyCFunction_Call;
#endif
    __pyx_CyFunctionType = __Pyx_FetchCommonType(&__pyx_CyFunctionType_type);
    if (__pyx_CyFunctionType == NULL) {
        return -1;
    }
    return 0;
}
static CYTHON_INLINE void *__Pyx_CyFunction_InitDefaults(PyObject *func, size_t size, int pyobjects) {
    __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
    m->defaults = PyMem_Malloc(size);
    if (!m->defaults)
        return PyErr_NoMemory();
    memset(m->defaults, 0, size);
    m->defaults_pyobjects = pyobjects;
    return m->defaults;
}
static CYTHON_INLINE void __Pyx_CyFunction_SetDefaultsTuple(PyObject *func, PyObject *tuple) {
    __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
    m->defaults_tuple = tuple;
    Py_INCREF(tuple);
}
static CYTHON_INLINE void __Pyx_CyFunction_SetDefaultsKwDict(PyObject *func, PyObject *dict) {
    __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
    m->defaults_kwdict = dict;
    Py_INCREF(dict);
}
static CYTHON_INLINE void __Pyx_CyFunction_SetAnnotationsDict(PyObject *func, PyObject *dict) {
    __pyx_CyFunctionObject *m = (__pyx_CyFunctionObject *) func;
    m->func_annotations = dict;
    Py_INCREF(dict);
}

static PyObject *__Pyx_Py3MetaclassPrepare(PyObject *metaclass, PyObject *bases, PyObject *name,
                                           PyObject *qualname, PyObject *mkw, PyObject *modname, PyObject *doc) {
    PyObject *ns;
    if (metaclass) {
        PyObject *prep = __Pyx_PyObject_GetAttrStr(metaclass, __pyx_n_s_prepare);
        if (prep) {
            PyObject *pargs = PyTuple_Pack(2, name, bases);
            if (unlikely(!pargs)) {
                Py_DECREF(prep);
                return NULL;
            }
            ns = PyObject_Call(prep, pargs, mkw);
            Py_DECREF(prep);
            Py_DECREF(pargs);
        } else {
            if (unlikely(!PyErr_ExceptionMatches(PyExc_AttributeError)))
                return NULL;
            PyErr_Clear();
            ns = PyDict_New();
        }
    } else {
        ns = PyDict_New();
    }
    if (unlikely(!ns))
        return NULL;
    if (unlikely(PyObject_SetItem(ns, __pyx_n_s_module, modname) < 0)) goto bad;
    if (unlikely(PyObject_SetItem(ns, __pyx_n_s_qualname, qualname) < 0)) goto bad;
    if (unlikely(doc && PyObject_SetItem(ns, __pyx_n_s_doc, doc) < 0)) goto bad;
    return ns;
bad:
    Py_DECREF(ns);
    return NULL;
}
static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObject *bases,
                                      PyObject *dict, PyObject *mkw,
                                      int calculate_metaclass, int allow_py2_metaclass) {
    PyObject *result, *margs;
    PyObject *owned_metaclass = NULL;
    if (allow_py2_metaclass) {
        owned_metaclass = PyObject_GetItem(dict, __pyx_n_s_metaclass);
        if (owned_metaclass) {
            metaclass = owned_metaclass;
        } else if (likely(PyErr_ExceptionMatches(PyExc_KeyError))) {
            PyErr_Clear();
        } else {
            return NULL;
        }
    }
    if (calculate_metaclass && (!metaclass || PyType_Check(metaclass))) {
        metaclass = __Pyx_CalculateMetaclass((PyTypeObject*) metaclass, bases);
        Py_XDECREF(owned_metaclass);
        if (unlikely(!metaclass))
            return NULL;
        owned_metaclass = metaclass;
    }
    margs = PyTuple_Pack(3, name, bases, dict);
    if (unlikely(!margs)) {
        result = NULL;
    } else {
        result = PyObject_Call(metaclass, margs, mkw);
        Py_DECREF(margs);
    }
    Py_XDECREF(owned_metaclass);
    return result;
}

static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) {
    int start = 0, mid = 0, end = count - 1;
    if (end >= 0 && code_line > entries[end].code_line) {
        return count;
    }
    while (start < end) {
        mid = start + (end - start) / 2;
        if (code_line < entries[mid].code_line) {
            end = mid;
        } else if (code_line > entries[mid].code_line) {
             start = mid + 1;
        } else {
            return mid;
        }
    }
    if (code_line <= entries[mid].code_line) {
        return mid;
    } else {
        return mid + 1;
    }
}
static PyCodeObject *__pyx_find_code_object(int code_line) {
    PyCodeObject* code_object;
    int pos;
    if (unlikely(!code_line) || unlikely(!__pyx_code_cache.entries)) {
        return NULL;
    }
    pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
    if (unlikely(pos >= __pyx_code_cache.count) || unlikely(__pyx_code_cache.entries[pos].code_line != code_line)) {
        return NULL;
    }
    code_object = __pyx_code_cache.entries[pos].code_object;
    Py_INCREF(code_object);
    return code_object;
}
static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) {
    int pos, i;
    __Pyx_CodeObjectCacheEntry* entries = __pyx_code_cache.entries;
    if (unlikely(!code_line)) {
        return;
    }
    if (unlikely(!entries)) {
        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Malloc(64*sizeof(__Pyx_CodeObjectCacheEntry));
        if (likely(entries)) {
            __pyx_code_cache.entries = entries;
            __pyx_code_cache.max_count = 64;
            __pyx_code_cache.count = 1;
            entries[0].code_line = code_line;
            entries[0].code_object = code_object;
            Py_INCREF(code_object);
        }
        return;
    }
    pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
    if ((pos < __pyx_code_cache.count) && unlikely(__pyx_code_cache.entries[pos].code_line == code_line)) {
        PyCodeObject* tmp = entries[pos].code_object;
        entries[pos].code_object = code_object;
        Py_DECREF(tmp);
        return;
    }
    if (__pyx_code_cache.count == __pyx_code_cache.max_count) {
        int new_max = __pyx_code_cache.max_count + 64;
        entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Realloc(
            __pyx_code_cache.entries, (size_t)new_max*sizeof(__Pyx_CodeObjectCacheEntry));
        if (unlikely(!entries)) {
            return;
        }
        __pyx_code_cache.entries = entries;
        __pyx_code_cache.max_count = new_max;
    }
    for (i=__pyx_code_cache.count; i>pos; i--) {
        entries[i] = entries[i-1];
    }
    entries[pos].code_line = code_line;
    entries[pos].code_object = code_object;
    __pyx_code_cache.count++;
    Py_INCREF(code_object);
}

#include "compile.h"
#include "frameobject.h"
#include "traceback.h"
static PyCodeObject* __Pyx_CreateCodeObjectForTraceback(
            const char *funcname, int c_line,
            int py_line, const char *filename) {
    PyCodeObject *py_code = 0;
    PyObject *py_srcfile = 0;
    PyObject *py_funcname = 0;
    #if PY_MAJOR_VERSION < 3
    py_srcfile = PyString_FromString(filename);
    #else
    py_srcfile = PyUnicode_FromString(filename);
    #endif
    if (!py_srcfile) goto bad;
    if (c_line) {
        #if PY_MAJOR_VERSION < 3
        py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
        #else
        py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
        #endif
    }
    else {
        #if PY_MAJOR_VERSION < 3
        py_funcname = PyString_FromString(funcname);
        #else
        py_funcname = PyUnicode_FromString(funcname);
        #endif
    }
    if (!py_funcname) goto bad;
    py_code = __Pyx_PyCode_New(
        0,
        0,
        0,
        0,
        0,
        __pyx_empty_bytes, /*PyObject *code,*/
        __pyx_empty_tuple, /*PyObject *consts,*/
        __pyx_empty_tuple, /*PyObject *names,*/
        __pyx_empty_tuple, /*PyObject *varnames,*/
        __pyx_empty_tuple, /*PyObject *freevars,*/
        __pyx_empty_tuple, /*PyObject *cellvars,*/
        py_srcfile,   /*PyObject *filename,*/
        py_funcname,  /*PyObject *name,*/
        py_line,
        __pyx_empty_bytes  /*PyObject *lnotab*/
    );
    Py_DECREF(py_srcfile);
    Py_DECREF(py_funcname);
    return py_code;
bad:
    Py_XDECREF(py_srcfile);
    Py_XDECREF(py_funcname);
    return NULL;
}
static void __Pyx_AddTraceback(const char *funcname, int c_line,
                               int py_line, const char *filename) {
    PyCodeObject *py_code = 0;
    PyFrameObject *py_frame = 0;
    py_code = __pyx_find_code_object(c_line ? c_line : py_line);
    if (!py_code) {
        py_code = __Pyx_CreateCodeObjectForTraceback(
            funcname, c_line, py_line, filename);
        if (!py_code) goto bad;
        __pyx_insert_code_object(c_line ? c_line : py_line, py_code);
    }
    py_frame = PyFrame_New(
        PyThreadState_GET(), /*PyThreadState *tstate,*/
        py_code,             /*PyCodeObject *code,*/
        __pyx_d,      /*PyObject *globals,*/
        0                    /*PyObject *locals*/
    );
    if (!py_frame) goto bad;
    py_frame->f_lineno = py_line;
    PyTraceBack_Here(py_frame);
bad:
    Py_XDECREF(py_code);
    Py_XDECREF(py_frame);
}

#if PY_MAJOR_VERSION < 3
static int __Pyx_GetBuffer(PyObject *obj, Py_buffer *view, int flags) {
    if (PyObject_CheckBuffer(obj)) return PyObject_GetBuffer(obj, view, flags);
        if (PyObject_TypeCheck(obj, __pyx_ptype_5numpy_ndarray)) return __pyx_pw_5numpy_7ndarray_1__getbuffer__(obj, view, flags);
    PyErr_Format(PyExc_TypeError, "'%.200s' does not have the buffer interface", Py_TYPE(obj)->tp_name);
    return -1;
}
static void __Pyx_ReleaseBuffer(Py_buffer *view) {
    PyObject *obj = view->obj;
    if (!obj) return;
    if (PyObject_CheckBuffer(obj)) {
        PyBuffer_Release(view);
        return;
    }
        if (PyObject_TypeCheck(obj, __pyx_ptype_5numpy_ndarray)) { __pyx_pw_5numpy_7ndarray_3__releasebuffer__(obj, view); return; }
    Py_DECREF(obj);
    view->obj = NULL;
}
#endif


              static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
    const long neg_one = (long) -1, const_zero = (long) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(long) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(long) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
        } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
        }
    } else {
        if (sizeof(long) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(long),
                                     little, !is_unsigned);
    }
}

#define __PYX_VERIFY_RETURN_INT(target_type, func_type, func_value)\
    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 0)
#define __PYX_VERIFY_RETURN_INT_EXC(target_type, func_type, func_value)\
    __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 1)
#define __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, exc)\
    {\
        func_type value = func_value;\
        if (sizeof(target_type) < sizeof(func_type)) {\
            if (unlikely(value != (func_type) (target_type) value)) {\
                func_type zero = 0;\
                if (exc && unlikely(value == (func_type)-1 && PyErr_Occurred()))\
                    return (target_type) -1;\
                if (is_unsigned && unlikely(value < zero))\
                    goto raise_neg_overflow;\
                else\
                    goto raise_overflow;\
            }\
        }\
        return (target_type) value;\
    }

#if CYTHON_USE_PYLONG_INTERNALS
  #include "longintrepr.h"
#endif

static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
    const int neg_one = (int) -1, const_zero = (int) 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
    if (likely(PyInt_Check(x))) {
        if (sizeof(int) < sizeof(long)) {
            __PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG(x))
        } else {
            long val = PyInt_AS_LONG(x);
            if (is_unsigned && unlikely(val < 0)) {
                goto raise_neg_overflow;
            }
            return (int) val;
        }
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (int) 0;
                case  1: __PYX_VERIFY_RETURN_INT(int, digit, digits[0])
                case 2:
                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 2 * PyLong_SHIFT) {
                            return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 3 * PyLong_SHIFT) {
                            return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) >= 4 * PyLong_SHIFT) {
                            return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
                        }
                    }
                    break;
            }
#endif
#if CYTHON_COMPILING_IN_CPYTHON
            if (unlikely(Py_SIZE(x) < 0)) {
                goto raise_neg_overflow;
            }
#else
            {
                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                if (unlikely(result < 0))
                    return (int) -1;
                if (unlikely(result == 1))
                    goto raise_neg_overflow;
            }
#endif
            if (sizeof(int) <= sizeof(unsigned long)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
            } else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
            }
        } else {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (int) 0;
                case -1: __PYX_VERIFY_RETURN_INT(int, sdigit, -(sdigit) digits[0])
                case  1: __PYX_VERIFY_RETURN_INT(int,  digit, +digits[0])
                case -2:
                    if (8 * sizeof(int) - 1 > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 2:
                    if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                            return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case -3:
                    if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                            return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case -4:
                    if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
                            return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
                            return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
                        }
                    }
                    break;
            }
#endif
            if (sizeof(int) <= sizeof(long)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
            } else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
            }
        }
        {
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
            PyErr_SetString(PyExc_RuntimeError,
                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
            int val;
            PyObject *v = __Pyx_PyNumber_Int(x);
 #if PY_MAJOR_VERSION < 3
            if (likely(v) && !PyLong_Check(v)) {
                PyObject *tmp = v;
                v = PyNumber_Long(tmp);
                Py_DECREF(tmp);
            }
 #endif
            if (likely(v)) {
                int one = 1; int is_little = (int)*(unsigned char *)&one;
                unsigned char *bytes = (unsigned char *)&val;
                int ret = _PyLong_AsByteArray((PyLongObject *)v,
                                              bytes, sizeof(val),
                                              is_little, !is_unsigned);
                Py_DECREF(v);
                if (likely(!ret))
                    return val;
            }
#endif
            return (int) -1;
        }
    } else {
        int val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (int) -1;
        val = __Pyx_PyInt_As_int(tmp);
        Py_DECREF(tmp);
        return val;
    }
raise_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "value too large to convert to int");
    return (int) -1;
raise_neg_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "can't convert negative value to int");
    return (int) -1;
}

static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value) {
    const int neg_one = (int) -1, const_zero = (int) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(int) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(int) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
        } else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
        }
    } else {
        if (sizeof(int) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(int),
                                     little, !is_unsigned);
    }
}

static CYTHON_INLINE PyObject* __Pyx_PyInt_From_npy_int32(npy_int32 value) {
    const npy_int32 neg_one = (npy_int32) -1, const_zero = (npy_int32) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(npy_int32) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(npy_int32) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
        } else if (sizeof(npy_int32) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
        }
    } else {
        if (sizeof(npy_int32) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(npy_int32) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(npy_int32),
                                     little, !is_unsigned);
    }
}

#if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    static CYTHON_INLINE __pyx_t_float_complex __pyx_t_float_complex_from_parts(float x, float y) {
      return ::std::complex< float >(x, y);
    }
  #else
    static CYTHON_INLINE __pyx_t_float_complex __pyx_t_float_complex_from_parts(float x, float y) {
      return x + y*(__pyx_t_float_complex)_Complex_I;
    }
  #endif
#else
    static CYTHON_INLINE __pyx_t_float_complex __pyx_t_float_complex_from_parts(float x, float y) {
      __pyx_t_float_complex z;
      z.real = x;
      z.imag = y;
      return z;
    }
#endif

#if CYTHON_CCOMPLEX
#else
    static CYTHON_INLINE int __Pyx_c_eqf(__pyx_t_float_complex a, __pyx_t_float_complex b) {
       return (a.real == b.real) && (a.imag == b.imag);
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_sumf(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        __pyx_t_float_complex z;
        z.real = a.real + b.real;
        z.imag = a.imag + b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_difff(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        __pyx_t_float_complex z;
        z.real = a.real - b.real;
        z.imag = a.imag - b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_prodf(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        __pyx_t_float_complex z;
        z.real = a.real * b.real - a.imag * b.imag;
        z.imag = a.real * b.imag + a.imag * b.real;
        return z;
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_quotf(__pyx_t_float_complex a, __pyx_t_float_complex b) {
        __pyx_t_float_complex z;
        float denom = b.real * b.real + b.imag * b.imag;
        z.real = (a.real * b.real + a.imag * b.imag) / denom;
        z.imag = (a.imag * b.real - a.real * b.imag) / denom;
        return z;
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_negf(__pyx_t_float_complex a) {
        __pyx_t_float_complex z;
        z.real = -a.real;
        z.imag = -a.imag;
        return z;
    }
    static CYTHON_INLINE int __Pyx_c_is_zerof(__pyx_t_float_complex a) {
       return (a.real == 0) && (a.imag == 0);
    }
    static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_conjf(__pyx_t_float_complex a) {
        __pyx_t_float_complex z;
        z.real =  a.real;
        z.imag = -a.imag;
        return z;
    }
    #if 1
        static CYTHON_INLINE float __Pyx_c_absf(__pyx_t_float_complex z) {
          #if !defined(HAVE_HYPOT) || defined(_MSC_VER)
            return sqrtf(z.real*z.real + z.imag*z.imag);
          #else
            return hypotf(z.real, z.imag);
          #endif
        }
        static CYTHON_INLINE __pyx_t_float_complex __Pyx_c_powf(__pyx_t_float_complex a, __pyx_t_float_complex b) {
            __pyx_t_float_complex z;
            float r, lnr, theta, z_r, z_theta;
            if (b.imag == 0 && b.real == (int)b.real) {
                if (b.real < 0) {
                    float denom = a.real * a.real + a.imag * a.imag;
                    a.real = a.real / denom;
                    a.imag = -a.imag / denom;
                    b.real = -b.real;
                }
                switch ((int)b.real) {
                    case 0:
                        z.real = 1;
                        z.imag = 0;
                        return z;
                    case 1:
                        return a;
                    case 2:
                        z = __Pyx_c_prodf(a, a);
                        return __Pyx_c_prodf(a, a);
                    case 3:
                        z = __Pyx_c_prodf(a, a);
                        return __Pyx_c_prodf(z, a);
                    case 4:
                        z = __Pyx_c_prodf(a, a);
                        return __Pyx_c_prodf(z, z);
                }
            }
            if (a.imag == 0) {
                if (a.real == 0) {
                    return a;
                }
                r = a.real;
                theta = 0;
            } else {
                r = __Pyx_c_absf(a);
                theta = atan2f(a.imag, a.real);
            }
            lnr = logf(r);
            z_r = expf(lnr * b.real - theta * b.imag);
            z_theta = theta * b.real + lnr * b.imag;
            z.real = z_r * cosf(z_theta);
            z.imag = z_r * sinf(z_theta);
            return z;
        }
    #endif
#endif

#if CYTHON_CCOMPLEX
  #ifdef __cplusplus
    static CYTHON_INLINE __pyx_t_double_complex __pyx_t_double_complex_from_parts(double x, double y) {
      return ::std::complex< double >(x, y);
    }
  #else
    static CYTHON_INLINE __pyx_t_double_complex __pyx_t_double_complex_from_parts(double x, double y) {
      return x + y*(__pyx_t_double_complex)_Complex_I;
    }
  #endif
#else
    static CYTHON_INLINE __pyx_t_double_complex __pyx_t_double_complex_from_parts(double x, double y) {
      __pyx_t_double_complex z;
      z.real = x;
      z.imag = y;
      return z;
    }
#endif

#if CYTHON_CCOMPLEX
#else
    static CYTHON_INLINE int __Pyx_c_eq(__pyx_t_double_complex a, __pyx_t_double_complex b) {
       return (a.real == b.real) && (a.imag == b.imag);
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_sum(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        __pyx_t_double_complex z;
        z.real = a.real + b.real;
        z.imag = a.imag + b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_diff(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        __pyx_t_double_complex z;
        z.real = a.real - b.real;
        z.imag = a.imag - b.imag;
        return z;
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_prod(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        __pyx_t_double_complex z;
        z.real = a.real * b.real - a.imag * b.imag;
        z.imag = a.real * b.imag + a.imag * b.real;
        return z;
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_quot(__pyx_t_double_complex a, __pyx_t_double_complex b) {
        __pyx_t_double_complex z;
        double denom = b.real * b.real + b.imag * b.imag;
        z.real = (a.real * b.real + a.imag * b.imag) / denom;
        z.imag = (a.imag * b.real - a.real * b.imag) / denom;
        return z;
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_neg(__pyx_t_double_complex a) {
        __pyx_t_double_complex z;
        z.real = -a.real;
        z.imag = -a.imag;
        return z;
    }
    static CYTHON_INLINE int __Pyx_c_is_zero(__pyx_t_double_complex a) {
       return (a.real == 0) && (a.imag == 0);
    }
    static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_conj(__pyx_t_double_complex a) {
        __pyx_t_double_complex z;
        z.real =  a.real;
        z.imag = -a.imag;
        return z;
    }
    #if 1
        static CYTHON_INLINE double __Pyx_c_abs(__pyx_t_double_complex z) {
          #if !defined(HAVE_HYPOT) || defined(_MSC_VER)
            return sqrt(z.real*z.real + z.imag*z.imag);
          #else
            return hypot(z.real, z.imag);
          #endif
        }
        static CYTHON_INLINE __pyx_t_double_complex __Pyx_c_pow(__pyx_t_double_complex a, __pyx_t_double_complex b) {
            __pyx_t_double_complex z;
            double r, lnr, theta, z_r, z_theta;
            if (b.imag == 0 && b.real == (int)b.real) {
                if (b.real < 0) {
                    double denom = a.real * a.real + a.imag * a.imag;
                    a.real = a.real / denom;
                    a.imag = -a.imag / denom;
                    b.real = -b.real;
                }
                switch ((int)b.real) {
                    case 0:
                        z.real = 1;
                        z.imag = 0;
                        return z;
                    case 1:
                        return a;
                    case 2:
                        z = __Pyx_c_prod(a, a);
                        return __Pyx_c_prod(a, a);
                    case 3:
                        z = __Pyx_c_prod(a, a);
                        return __Pyx_c_prod(z, a);
                    case 4:
                        z = __Pyx_c_prod(a, a);
                        return __Pyx_c_prod(z, z);
                }
            }
            if (a.imag == 0) {
                if (a.real == 0) {
                    return a;
                }
                r = a.real;
                theta = 0;
            } else {
                r = __Pyx_c_abs(a);
                theta = atan2(a.imag, a.real);
            }
            lnr = log(r);
            z_r = exp(lnr * b.real - theta * b.imag);
            z_theta = theta * b.real + lnr * b.imag;
            z.real = z_r * cos(z_theta);
            z.imag = z_r * sin(z_theta);
            return z;
        }
    #endif
#endif

static CYTHON_INLINE PyObject* __Pyx_PyInt_From_enum__NPY_TYPES(enum NPY_TYPES value) {
    const enum NPY_TYPES neg_one = (enum NPY_TYPES) -1, const_zero = (enum NPY_TYPES) 0;
    const int is_unsigned = neg_one > const_zero;
    if (is_unsigned) {
        if (sizeof(enum NPY_TYPES) < sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(enum NPY_TYPES) <= sizeof(unsigned long)) {
            return PyLong_FromUnsignedLong((unsigned long) value);
        } else if (sizeof(enum NPY_TYPES) <= sizeof(unsigned PY_LONG_LONG)) {
            return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
        }
    } else {
        if (sizeof(enum NPY_TYPES) <= sizeof(long)) {
            return PyInt_FromLong((long) value);
        } else if (sizeof(enum NPY_TYPES) <= sizeof(PY_LONG_LONG)) {
            return PyLong_FromLongLong((PY_LONG_LONG) value);
        }
    }
    {
        int one = 1; int little = (int)*(unsigned char *)&one;
        unsigned char *bytes = (unsigned char *)&value;
        return _PyLong_FromByteArray(bytes, sizeof(enum NPY_TYPES),
                                     little, !is_unsigned);
    }
}

static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
    const long neg_one = (long) -1, const_zero = (long) 0;
    const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
    if (likely(PyInt_Check(x))) {
        if (sizeof(long) < sizeof(long)) {
            __PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG(x))
        } else {
            long val = PyInt_AS_LONG(x);
            if (is_unsigned && unlikely(val < 0)) {
                goto raise_neg_overflow;
            }
            return (long) val;
        }
    } else
#endif
    if (likely(PyLong_Check(x))) {
        if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (long) 0;
                case  1: __PYX_VERIFY_RETURN_INT(long, digit, digits[0])
                case 2:
                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 2 * PyLong_SHIFT) {
                            return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 3 * PyLong_SHIFT) {
                            return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) >= 4 * PyLong_SHIFT) {
                            return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
                        }
                    }
                    break;
            }
#endif
#if CYTHON_COMPILING_IN_CPYTHON
            if (unlikely(Py_SIZE(x) < 0)) {
                goto raise_neg_overflow;
            }
#else
            {
                int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
                if (unlikely(result < 0))
                    return (long) -1;
                if (unlikely(result == 1))
                    goto raise_neg_overflow;
            }
#endif
            if (sizeof(long) <= sizeof(unsigned long)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
            } else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
            }
        } else {
#if CYTHON_USE_PYLONG_INTERNALS
            const digit* digits = ((PyLongObject*)x)->ob_digit;
            switch (Py_SIZE(x)) {
                case  0: return (long) 0;
                case -1: __PYX_VERIFY_RETURN_INT(long, sdigit, -(sdigit) digits[0])
                case  1: __PYX_VERIFY_RETURN_INT(long,  digit, +digits[0])
                case -2:
                    if (8 * sizeof(long) - 1 > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 2:
                    if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                            return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case -3:
                    if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 3:
                    if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                            return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case -4:
                    if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
                            return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
                case 4:
                    if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
                        if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
                            __PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
                        } else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
                            return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
                        }
                    }
                    break;
            }
#endif
            if (sizeof(long) <= sizeof(long)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
            } else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
                __PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
            }
        }
        {
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
            PyErr_SetString(PyExc_RuntimeError,
                            "_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
            long val;
            PyObject *v = __Pyx_PyNumber_Int(x);
 #if PY_MAJOR_VERSION < 3
            if (likely(v) && !PyLong_Check(v)) {
                PyObject *tmp = v;
                v = PyNumber_Long(tmp);
                Py_DECREF(tmp);
            }
 #endif
            if (likely(v)) {
                int one = 1; int is_little = (int)*(unsigned char *)&one;
                unsigned char *bytes = (unsigned char *)&val;
                int ret = _PyLong_AsByteArray((PyLongObject *)v,
                                              bytes, sizeof(val),
                                              is_little, !is_unsigned);
                Py_DECREF(v);
                if (likely(!ret))
                    return val;
            }
#endif
            return (long) -1;
        }
    } else {
        long val;
        PyObject *tmp = __Pyx_PyNumber_Int(x);
        if (!tmp) return (long) -1;
        val = __Pyx_PyInt_As_long(tmp);
        Py_DECREF(tmp);
        return val;
    }
raise_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "value too large to convert to long");
    return (long) -1;
raise_neg_overflow:
    PyErr_SetString(PyExc_OverflowError,
        "can't convert negative value to long");
    return (long) -1;
}

static int __Pyx_check_binary_version(void) {
    char ctversion[4], rtversion[4];
    PyOS_snprintf(ctversion, 4, "%d.%d", PY_MAJOR_VERSION, PY_MINOR_VERSION);
    PyOS_snprintf(rtversion, 4, "%s", Py_GetVersion());
    if (ctversion[0] != rtversion[0] || ctversion[2] != rtversion[2]) {
        char message[200];
        PyOS_snprintf(message, sizeof(message),
                      "compiletime version %s of module '%.100s' "
                      "does not match runtime version %s",
                      ctversion, __Pyx_MODULE_NAME, rtversion);
        return PyErr_WarnEx(NULL, message, 1);
    }
    return 0;
}

#ifndef __PYX_HAVE_RT_ImportModule
#define __PYX_HAVE_RT_ImportModule
static PyObject *__Pyx_ImportModule(const char *name) {
    PyObject *py_name = 0;
    PyObject *py_module = 0;
    py_name = __Pyx_PyIdentifier_FromString(name);
    if (!py_name)
        goto bad;
    py_module = PyImport_Import(py_name);
    Py_DECREF(py_name);
    return py_module;
bad:
    Py_XDECREF(py_name);
    return 0;
}
#endif

#ifndef __PYX_HAVE_RT_ImportType
#define __PYX_HAVE_RT_ImportType
static PyTypeObject *__Pyx_ImportType(const char *module_name, const char *class_name,
    size_t size, int strict)
{
    PyObject *py_module = 0;
    PyObject *result = 0;
    PyObject *py_name = 0;
    char warning[200];
    Py_ssize_t basicsize;
#ifdef Py_LIMITED_API
    PyObject *py_basicsize;
#endif
    py_module = __Pyx_ImportModule(module_name);
    if (!py_module)
        goto bad;
    py_name = __Pyx_PyIdentifier_FromString(class_name);
    if (!py_name)
        goto bad;
    result = PyObject_GetAttr(py_module, py_name);
    Py_DECREF(py_name);
    py_name = 0;
    Py_DECREF(py_module);
    py_module = 0;
    if (!result)
        goto bad;
    if (!PyType_Check(result)) {
        PyErr_Format(PyExc_TypeError,
            "%.200s.%.200s is not a type object",
            module_name, class_name);
        goto bad;
    }
#ifndef Py_LIMITED_API
    basicsize = ((PyTypeObject *)result)->tp_basicsize;
#else
    py_basicsize = PyObject_GetAttrString(result, "__basicsize__");
    if (!py_basicsize)
        goto bad;
    basicsize = PyLong_AsSsize_t(py_basicsize);
    Py_DECREF(py_basicsize);
    py_basicsize = 0;
    if (basicsize == (Py_ssize_t)-1 && PyErr_Occurred())
        goto bad;
#endif
    if (!strict && (size_t)basicsize > size) {
        PyOS_snprintf(warning, sizeof(warning),
            "%s.%s size changed, may indicate binary incompatibility",
            module_name, class_name);
        if (PyErr_WarnEx(NULL, warning, 0) < 0) goto bad;
    }
    else if ((size_t)basicsize != size) {
        PyErr_Format(PyExc_ValueError,
            "%.200s.%.200s has the wrong size, try recompiling",
            module_name, class_name);
        goto bad;
    }
    return (PyTypeObject *)result;
bad:
    Py_XDECREF(py_module);
    Py_XDECREF(result);
    return NULL;
}
#endif

static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) {
    while (t->p) {
        #if PY_MAJOR_VERSION < 3
        if (t->is_unicode) {
            *t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL);
        } else if (t->intern) {
            *t->p = PyString_InternFromString(t->s);
        } else {
            *t->p = PyString_FromStringAndSize(t->s, t->n - 1);
        }
        #else
        if (t->is_unicode | t->is_str) {
            if (t->intern) {
                *t->p = PyUnicode_InternFromString(t->s);
            } else if (t->encoding) {
                *t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL);
            } else {
                *t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1);
            }
        } else {
            *t->p = PyBytes_FromStringAndSize(t->s, t->n - 1);
        }
        #endif
        if (!*t->p)
            return -1;
        ++t;
    }
    return 0;
}

static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char* c_str) {
    return __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str));
}
static CYTHON_INLINE char* __Pyx_PyObject_AsString(PyObject* o) {
    Py_ssize_t ignore;
    return __Pyx_PyObject_AsStringAndSize(o, &ignore);
}
static CYTHON_INLINE char* __Pyx_PyObject_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
#if CYTHON_COMPILING_IN_CPYTHON && (__PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT)
    if (
#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
            __Pyx_sys_getdefaultencoding_not_ascii &&
#endif
            PyUnicode_Check(o)) {
#if PY_VERSION_HEX < 0x03030000
        char* defenc_c;
        PyObject* defenc = _PyUnicode_AsDefaultEncodedString(o, NULL);
        if (!defenc) return NULL;
        defenc_c = PyBytes_AS_STRING(defenc);
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
        {
            char* end = defenc_c + PyBytes_GET_SIZE(defenc);
            char* c;
            for (c = defenc_c; c < end; c++) {
                if ((unsigned char) (*c) >= 128) {
                    PyUnicode_AsASCIIString(o);
                    return NULL;
                }
            }
        }
#endif
        *length = PyBytes_GET_SIZE(defenc);
        return defenc_c;
#else
        if (__Pyx_PyUnicode_READY(o) == -1) return NULL;
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
        if (PyUnicode_IS_ASCII(o)) {
            *length = PyUnicode_GET_LENGTH(o);
            return PyUnicode_AsUTF8(o);
        } else {
            PyUnicode_AsASCIIString(o);
            return NULL;
        }
#else
        return PyUnicode_AsUTF8AndSize(o, length);
#endif
#endif
    } else
#endif
#if (!CYTHON_COMPILING_IN_PYPY) || (defined(PyByteArray_AS_STRING) && defined(PyByteArray_GET_SIZE))
    if (PyByteArray_Check(o)) {
        *length = PyByteArray_GET_SIZE(o);
        return PyByteArray_AS_STRING(o);
    } else
#endif
    {
        char* result;
        int r = PyBytes_AsStringAndSize(o, &result, length);
        if (unlikely(r < 0)) {
            return NULL;
        } else {
            return result;
        }
    }
}
static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject* x) {
   int is_true = x == Py_True;
   if (is_true | (x == Py_False) | (x == Py_None)) return is_true;
   else return PyObject_IsTrue(x);
}
static CYTHON_INLINE PyObject* __Pyx_PyNumber_Int(PyObject* x) {
  PyNumberMethods *m;
  const char *name = NULL;
  PyObject *res = NULL;
#if PY_MAJOR_VERSION < 3
  if (PyInt_Check(x) || PyLong_Check(x))
#else
  if (PyLong_Check(x))
#endif
    return __Pyx_NewRef(x);
  m = Py_TYPE(x)->tp_as_number;
#if PY_MAJOR_VERSION < 3
  if (m && m->nb_int) {
    name = "int";
    res = PyNumber_Int(x);
  }
  else if (m && m->nb_long) {
    name = "long";
    res = PyNumber_Long(x);
  }
#else
  if (m && m->nb_int) {
    name = "int";
    res = PyNumber_Long(x);
  }
#endif
  if (res) {
#if PY_MAJOR_VERSION < 3
    if (!PyInt_Check(res) && !PyLong_Check(res)) {
#else
    if (!PyLong_Check(res)) {
#endif
      PyErr_Format(PyExc_TypeError,
                   "__%.4s__ returned non-%.4s (type %.200s)",
                   name, name, Py_TYPE(res)->tp_name);
      Py_DECREF(res);
      return NULL;
    }
  }
  else if (!PyErr_Occurred()) {
    PyErr_SetString(PyExc_TypeError,
                    "an integer is required");
  }
  return res;
}
static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject* b) {
  Py_ssize_t ival;
  PyObject *x;
#if PY_MAJOR_VERSION < 3
  if (likely(PyInt_CheckExact(b))) {
    if (sizeof(Py_ssize_t) >= sizeof(long))
        return PyInt_AS_LONG(b);
    else
        return PyInt_AsSsize_t(x);
  }
#endif
  if (likely(PyLong_CheckExact(b))) {
    #if CYTHON_USE_PYLONG_INTERNALS
    const digit* digits = ((PyLongObject*)b)->ob_digit;
    const Py_ssize_t size = Py_SIZE(b);
    if (likely(__Pyx_sst_abs(size) <= 1)) {
        ival = likely(size) ? digits[0] : 0;
        if (size == -1) ival = -ival;
        return ival;
    } else {
      switch (size) {
         case 2:
           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -2:
           if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case 3:
           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -3:
           if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case 4:
           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
             return (Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
         case -4:
           if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
             return -(Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
           }
           break;
      }
    }
    #endif
    return PyLong_AsSsize_t(b);
  }
  x = PyNumber_Index(b);
  if (!x) return -1;
  ival = PyInt_AsSsize_t(x);
  Py_DECREF(x);
  return ival;
}
static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t ival) {
    return PyInt_FromSize_t(ival);
}


#endif /* Py_PYTHON_H */
