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| author | Christian Heimes <christian@cheimes.de> | 2013-11-20 11:46:18 +0100 |
|---|---|---|
| committer | Christian Heimes <christian@cheimes.de> | 2013-11-20 11:46:18 +0100 |
| commit | 985ecdcfc29adfc36ce2339acf03f819ad414869 (patch) | |
| tree | 06a11f82271e768dbe49469c8736b65b083f671c /Include/pyport.h | |
| parent | fe32aec25a8b36498d840bd69485e9bc94195b9c (diff) | |
| download | cpython-git-985ecdcfc29adfc36ce2339acf03f819ad414869.tar.gz | |
ssue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'.
Python now uses SipHash24 on all major platforms.
Diffstat (limited to 'Include/pyport.h')
| -rw-r--r-- | Include/pyport.h | 19 |
1 files changed, 2 insertions, 17 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index ca20b22601..b6b426ae91 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -144,23 +144,6 @@ Used in: PY_LONG_LONG #endif #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 Objects/object.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_NAN 0 -#define _PyHASH_IMAG _PyHASH_MULTIPLIER - /* 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 @@ -199,8 +182,10 @@ typedef Py_intptr_t Py_ssize_t; #endif /* Py_hash_t is the same size as a pointer. */ +#define SIZEOF_PY_HASH_T SIZEOF_SIZE_T typedef Py_ssize_t Py_hash_t; /* Py_uhash_t is the unsigned equivalent needed to calculate numeric hash. */ +#define SIZEOF_PY_UHASH_T SIZEOF_SIZE_T typedef size_t Py_uhash_t; /* Largest possible value of size_t. |