diff options
| author | Chris Robinson <[email protected]> | 2018-11-24 21:16:53 -0800 |
|---|---|---|
| committer | Chris Robinson <[email protected]> | 2018-11-24 21:16:53 -0800 |
| commit | f5f2cdaaf334a1481d063cdf03893bfad1768475 (patch) | |
| tree | a59fe29e966b4af8c964b217a6fc3a51ea4e36a7 | |
| parent | 71660df5e50bf44784c8bd06d80af96eb3a5a479 (diff) | |
Add a POPCNT64 macro
To count the number of 1/on bits in a 64-bit value
| -rw-r--r-- | OpenAL32/Include/alMain.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h index 21aa1e89..5adabb18 100644 --- a/OpenAL32/Include/alMain.h +++ b/OpenAL32/Include/alMain.h @@ -135,13 +135,21 @@ typedef ALuint64SOFT ALuint64; #ifdef __GNUC__ #if SIZEOF_LONG == 8 +#define POPCNT64 __builtin_popcountl #define CTZ64 __builtin_ctzl #else +#define POPCNT64 __builtin_popcountll #define CTZ64 __builtin_ctzll #endif #elif defined(HAVE_BITSCANFORWARD64_INTRINSIC) +inline int msvc64_popcnt64(ALuint64 v) +{ + return __popcnt64(v); +} +#define POPCNT64 msvc64_popcnt64 + inline int msvc64_ctz64(ALuint64 v) { unsigned long idx = 64; @@ -152,6 +160,12 @@ inline int msvc64_ctz64(ALuint64 v) #elif defined(HAVE_BITSCANFORWARD_INTRINSIC) +inline int msvc_popcnt64(ALuint64 v) +{ + return __popcnt((ALuint)v) + __popcnt((ALuint)(v>>32)); +} +#define POPCNT64 msvc_popcnt64 + inline int msvc_ctz64(ALuint64 v) { unsigned long idx = 64; @@ -180,6 +194,7 @@ inline int fallback_popcnt64(ALuint64 v) v = (v + (v >> 4)) & U64(0x0f0f0f0f0f0f0f0f); return (int)((v * U64(0x0101010101010101)) >> 56); } +#define POPCNT64 fallback_popcnt64 inline int fallback_ctz64(ALuint64 value) { |