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| author | Mark Dickinson <mdickinson@enthought.com> | 2022-01-14 18:54:56 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-01-14 18:54:56 (GMT) |
| commit | 025cbe7a9b5d3058ce2eb8015d3650e396004545 (patch) | |
| tree | dbe02480ec23d31a72088bce7dd641d9bf45160e /Include/pyport.h | |
| parent | ee1a8b336d30476e9635a6826f61a99fc3604159 (diff) | |
| download | cpython-025cbe7a9b5d3058ce2eb8015d3650e396004545.zip cpython-025cbe7a9b5d3058ce2eb8015d3650e396004545.tar.gz cpython-025cbe7a9b5d3058ce2eb8015d3650e396004545.tar.bz2 | |
bpo-45569: Change PYLONG_BITS_IN_DIGIT default to 30 (GH-30497)
Diffstat (limited to 'Include/pyport.h')
| -rw-r--r-- | Include/pyport.h | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/Include/pyport.h b/Include/pyport.h index 81b1bde..d27b3dd 100644 --- a/Include/pyport.h +++ b/Include/pyport.h @@ -85,20 +85,12 @@ Used in: Py_SAFE_DOWNCAST #define PY_INT32_T int32_t #define PY_INT64_T int64_t -/* If PYLONG_BITS_IN_DIGIT is not defined then we'll use 30-bit digits if all - the necessary integer types are available, and we're on a 64-bit platform - (as determined by SIZEOF_VOID_P); otherwise we use 15-bit digits. - - From pyodide: WASM has 32 bit pointers but has native 64 bit arithmetic - so it is more efficient to use 30 bit digits. +/* PYLONG_BITS_IN_DIGIT describes the number of bits per "digit" (limb) in the + * PyLongObject implementation (longintrepr.h). It's currently either 30 or 15, + * defaulting to 30. The 15-bit digit option may be removed in the future. */ - #ifndef PYLONG_BITS_IN_DIGIT -#if SIZEOF_VOID_P >= 8 || defined(__wasm__) -# define PYLONG_BITS_IN_DIGIT 30 -#else -# define PYLONG_BITS_IN_DIGIT 15 -#endif +#define PYLONG_BITS_IN_DIGIT 30 #endif /* uintptr_t is the C9X name for an unsigned integral type such that a |