diff options
Diffstat (limited to 'Include')
| -rw-r--r-- | Include/pyport.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index dc5c1fd..9561285 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -126,6 +126,20 @@ Used in: PY_LONG_LONG #endif #endif +/* Parameters used for the numeric hash implementation. See notes for + _PyHash_Double in Objects/object.c. Numeric hashes are based on + reduction modulo the prime 2**_PyHASH_BITS - 1. */ + +#if SIZEOF_LONG >= 8 +#define _PyHASH_BITS 61 +#else +#define _PyHASH_BITS 31 +#endif +#define _PyHASH_MODULUS ((1UL << _PyHASH_BITS) - 1) +#define _PyHASH_INF 314159 +#define _PyHASH_NAN 0 +#define _PyHASH_IMAG 1000003UL + /* uintptr_t is the C9X name for an unsigned integral type such that a * legitimate void* can be cast to uintptr_t and then back to void* again * without loss of information. Similarly for intptr_t, wrt a signed |