diff options
Diffstat (limited to 'libFDK/include/clz.h')
| -rw-r--r-- | libFDK/include/clz.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libFDK/include/clz.h b/libFDK/include/clz.h index 38c5073..d276002 100644 --- a/libFDK/include/clz.h +++ b/libFDK/include/clz.h @@ -118,6 +118,11 @@ inline INT fixnormz_S (SHORT a) { return fixnormz_D((INT)(a)); } +#elif defined(__GNUC__) +inline INT fixnormz_S (SHORT a) +{ + return a ? __builtin_clz(a) : 16; +} #else inline INT fixnormz_S (SHORT a) { @@ -134,6 +139,12 @@ inline INT fixnormz_S (SHORT a) #endif #if !defined(FUNCTION_fixnormz_D) +#if defined(__GNUC__) +inline INT fixnormz_D (LONG a) +{ + return a ? __builtin_clz(a) : 32; +} +#else inline INT fixnormz_D (LONG a) { INT leadingBits = 0; @@ -146,6 +157,7 @@ inline INT fixnormz_D (LONG a) return (leadingBits); } #endif +#endif /***************************************************************************** |