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| author | Gregory P. Smith <greg@krypto.org> | 2012-01-14 23:45:13 (GMT) |
|---|---|---|
| committer | Gregory P. Smith <greg@krypto.org> | 2012-01-14 23:45:13 (GMT) |
| commit | f5b62a9b314e71e6bd5014be92ad1d10ff8e0d63 (patch) | |
| tree | feb12ee5852eb7674802e9de3c2ef9c32c4f9ee6 /Include | |
| parent | d66b5051551b1d5199aaf5d30368d22232f49524 (diff) | |
| parent | 63e6c3222f563cfb156de6e92199e9e35ad5d832 (diff) | |
| download | cpython-f5b62a9b314e71e6bd5014be92ad1d10ff8e0d63.zip cpython-f5b62a9b314e71e6bd5014be92ad1d10ff8e0d63.tar.gz cpython-f5b62a9b314e71e6bd5014be92ad1d10ff8e0d63.tar.bz2 | |
Consolidate the occurrances of the prime used as the multiplier when hashing.
Diffstat (limited to 'Include')
| -rw-r--r-- | Include/pyport.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index 5309de6..1fd4dcc 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -131,6 +131,9 @@ Used in: PY_LONG_LONG #endif #endif +/* Prime multiplier used in string and various other hashes. */ +#define _PyHASH_MULTIPLIER 1000003 /* 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. */ @@ -143,7 +146,7 @@ Used in: PY_LONG_LONG #define _PyHASH_MODULUS (((size_t)1 << _PyHASH_BITS) - 1) #define _PyHASH_INF 314159 #define _PyHASH_NAN 0 -#define _PyHASH_IMAG 1000003UL +#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 |