From 726d99b19740dca6787ab819ab99bc9d942d80a6 Mon Sep 17 00:00:00 2001 From: Jonathan Gray Date: Tue, 17 Mar 2015 12:49:39 +1100 Subject: [PATCH] gallium/util: Use HAVE___BUILTIN_FFS* macros. Make use of the builtin ffs macros and split out ffsll to a seperate block. Needed for at least OpenBSD which does not have ffsll in libc. Signed-off-by: Jonathan Gray Reviewed-by: Emil Velikov --- src/gallium/auxiliary/util/u_math.h | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index 8f62cac664e..3d27a59e8c0 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -383,13 +383,27 @@ unsigned ffs( unsigned u ) return i; } -#elif defined(__MINGW32__) || defined(PIPE_OS_ANDROID) +#elif defined(__MINGW32__) || defined(PIPE_OS_ANDROID) || \ + defined(HAVE___BUILTIN_FFS) #define ffs __builtin_ffs -#define ffsll __builtin_ffsll #endif #endif /* FFS_DEFINED */ +/** + * Find first bit set in long long. Least significant bit is 1. + * Return 0 if no bits set. + */ +#ifndef FFSLL_DEFINED +#define FFSLL_DEFINED 1 + +#if defined(__MINGW32__) || defined(PIPE_OS_ANDROID) || \ + defined(HAVE___BUILTIN_FFSLL) +#define ffsll __builtin_ffsll +#endif + +#endif /* FFSLL_DEFINED */ + /** * Find last bit set in a word. The least significant bit is 1. * Return 0 if no bits are set. -- 2.30.2