diff options
| author | Steve Lhomme <robux4@ycbcr.xyz> | 2018-09-28 10:41:56 +0300 |
|---|---|---|
| committer | Steve Lhomme <robux4@ycbcr.xyz> | 2018-09-28 13:09:41 +0300 |
| commit | 9a48df2e5794b0378f256b4721789bd9271f8a82 (patch) | |
| tree | 63d239f71ee54499261f0fbcf3976ca7dba5b8df /include | |
| parent | 79764604b15e93be267a9e1dfda2d280bb366632 (diff) | |
add helper functions for ctz/clz
Diffstat (limited to 'include')
| -rw-r--r-- | include/common/attributes.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/common/attributes.h b/include/common/attributes.h index b2315bc..f3b0d47 100644 --- a/include/common/attributes.h +++ b/include/common/attributes.h @@ -51,4 +51,16 @@ #define ALIGN_STK_16(type, var, sz1d, sznd) \ ALIGN(type var[sz1d]sznd, 16) +static inline int ctz(const unsigned int mask) { + return __builtin_ctz(mask); +} + +static inline int clz(const unsigned int mask) { + return __builtin_clz(mask); +} + +static inline int clzll(const unsigned long long mask) { + return __builtin_clzll(mask); +} + #endif /* __DAV1D_COMMON_ATTRIBUTES_H__ */ |