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#ifndef Py_CPYTHON_HASH_H
# error "this header file must not be included directly"
#endif
/* Prime multiplier used in string and various other hashes. */
#define _PyHASH_MULTIPLIER 1000003UL /* 0xf4243 */
/* Parameters used for the numeric hash implementation. See notes for
_Py_HashDouble in Python/pyhash.c. Numeric hashes are based on
reduction modulo the prime 2**_PyHASH_BITS - 1. */
#if SIZEOF_VOID_P >= 8
# define PyHASH_BITS 61
#else
# define PyHASH_BITS 31
#endif
#define PyHASH_MODULUS (((size_t)1 << _PyHASH_BITS) - 1)
#define PyHASH_INF 314159
#define PyHASH_IMAG _PyHASH_MULTIPLIER
/* Aliases kept for backward compatibility with Python 3.12 */
#define _PyHASH_BITS PyHASH_BITS
#define _PyHASH_MODULUS PyHASH_MODULUS
#define _PyHASH_INF PyHASH_INF
#define _PyHASH_IMAG PyHASH_IMAG
/* Helpers for hash functions */
PyAPI_FUNC(Py_hash_t) _Py_HashDouble(PyObject *, double);
// Kept for backward compatibility
#define _Py_HashPointer Py_HashPointer
/* hash function definition */
typedef struct {
Py_hash_t (*const hash)(const void *, Py_ssize_t);
const char *name;
const int hash_bits;
const int seed_bits;
} PyHash_FuncDef;
PyAPI_FUNC(PyHash_FuncDef*) PyHash_GetFuncDef(void);
PyAPI_FUNC(Py_hash_t) Py_HashPointer(const void *ptr);
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