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| author | Nikita Popov <nikic@php.net> | 2016-04-24 17:04:22 +0200 |
|---|---|---|
| committer | Nikita Popov <nikic@php.net> | 2016-04-24 17:05:13 +0200 |
| commit | cafe78d12aa2db789f141dd41cf16268ddcab76f (patch) | |
| tree | 35725db43f29169a433bc74d074d5be623173810 /Zend/zend_bitset.h | |
| parent | 62240f2653697e336f6fb2ecfe8788acf5b903c3 (diff) | |
| download | php-git-cafe78d12aa2db789f141dd41cf16268ddcab76f.tar.gz | |
Introduce ZEND_BITSET_FOREACH macros
Diffstat (limited to 'Zend/zend_bitset.h')
| -rw-r--r-- | Zend/zend_bitset.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Zend/zend_bitset.h b/Zend/zend_bitset.h index e3c2ec748d..fb19b54329 100644 --- a/Zend/zend_bitset.h +++ b/Zend/zend_bitset.h @@ -174,6 +174,33 @@ static inline int zend_bitset_last(zend_bitset set, uint32_t len) return -1; /* empty set */ } +#define ZEND_BITSET_FOREACH(set, len, bit) do { \ + zend_bitset _set = (set); \ + uint32_t _i, _len = (len); \ + for (_i = 0; _i < len; _i++) { \ + zend_ulong _x = _set[_i]; \ + if (_x) { \ + (bit) = ZEND_BITSET_ELM_SIZE * 8 * _i; \ + for (; _x != 0; _x >>= Z_UL(1), (bit)++) { \ + if (!(_x & Z_UL(1))) continue; + +#define ZEND_BITSET_REVERSE_FOREACH(set, len, bit) do { \ + zend_bitset _set = (set); \ + uint32_t _i = (len); \ + zend_ulong _test = Z_UL(1) << (ZEND_BITSET_ELM_SIZE * 8 - 1); \ + while (_i-- > 0) { \ + zend_ulong _x = _set[_i]; \ + if (_x) { \ + (bit) = ZEND_BITSET_ELM_SIZE * 8 * (_i + 1) - 1; \ + for (; _x != 0; _x <<= Z_UL(1), (bit)--) { \ + if (!(_x & _test)) continue; \ + +#define ZEND_BITSET_FOREACH_END() \ + } \ + } \ + } \ +} while (0) + #endif /* _ZEND_BITSET_H_ */ /* |