Skip to main content

Browse the archive

Staging
v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision d6fdfc82dd307161ca2222ae938b7a6c85215bc1 authored by Miss Islington (bot) on 15 September 2019, 17:04:00 UTC, committed by Raymond Hettinger on 15 September 2019, 17:04:00 UTC 
bpo-37798: Prevent undefined behavior in direct calls to the C helper function. (GH-16149) (GH-16160)
 
(cherry picked from commit 6e27a0d77520bf2c4412e367496212510f81b983)

Co-authored-by: Raymond Hettinger <rhettinger@users.noreply.github.com>
1 parent b65be6c
Raw File
Tip revision: d6fdfc82dd307161ca2222ae938b7a6c85215bc1 authored by Miss Islington (bot) on 15 September 2019, 17:04:00 UTC
bpo-37798: Prevent undefined behavior in direct calls to the C helper function. (GH-16149) (GH-16160)
Tip revision: d6fdfc8
bitset.h 

#ifndef Py_BITSET_H
#define Py_BITSET_H
#ifdef __cplusplus
extern "C" {
#endif

/* Bitset interface */

#define BYTE            char
typedef BYTE *bitset;

#define testbit(ss, ibit) (((ss)[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0)

#define BITSPERBYTE     (8*sizeof(BYTE))
#define BIT2BYTE(ibit)  ((ibit) / BITSPERBYTE)
#define BIT2SHIFT(ibit) ((ibit) % BITSPERBYTE)
#define BIT2MASK(ibit)  (1 << BIT2SHIFT(ibit))

#ifdef __cplusplus
}
#endif
#endif /* !Py_BITSET_H */
back to top