diff options
| author | Ian Romanick <[email protected]> | 2009-09-10 15:33:45 -0700 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2009-09-10 15:33:45 -0700 |
| commit | b8e1e8d2d8ae6ffbf8f271b46ee89788a926b3b0 (patch) | |
| tree | 5db502ab80287bfc8ff61082784017c7448464f5 /src/gallium/auxiliary/util/u_math.h | |
| parent | 81722c5d7e8e93d837510b9e6e5d014ec64cf4b3 (diff) | |
| parent | d9dc4cb0e4f578da9e50c9d1ba6fd9c22ea2fca6 (diff) | |
Merge branch 'master' into asm-shader-rework-2
Conflicts:
src/mesa/shader/lex.yy.c
src/mesa/shader/program_parse.tab.c
src/mesa/shader/program_parse.tab.h
Diffstat (limited to 'src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index b0807c13392..b12c97dfb4d 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -341,6 +341,16 @@ util_is_inf_or_nan(float x) /** + * Test whether x is a power of two. + */ +static INLINE boolean +util_is_pot(unsigned x) +{ + return (x & (x - 1)) == 0; +} + + +/** * Find first bit set in word. Least significant bit is 1. * Return 0 if no bits set. */ @@ -374,6 +384,10 @@ unsigned ffs( unsigned u ) #define ffs __builtin_ffs #endif +#ifdef __MINGW32__ +#define ffs __builtin_ffs +#endif + /* Could also binary search for the highest bit. */ |