diff options
Diffstat (limited to 'src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index 404bd21e1c5..f6196665f4f 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -340,6 +340,9 @@ util_is_inf_or_nan(float x) * Find first bit set in word. Least significant bit is 1. * Return 0 if no bits set. */ +#ifndef FFS_DEFINED +#define FFS_DEFINED 1 + #if defined(_MSC_VER) && _MSC_VER >= 1300 && (_M_IX86 || _M_AMD64 || _M_IA64) unsigned char _BitScanForward(unsigned long* Index, unsigned long Mask); #pragma intrinsic(_BitScanForward) @@ -372,6 +375,8 @@ unsigned ffs( unsigned u ) #define ffs __builtin_ffs #endif +#endif /* FFS_DEFINED */ + /* Destructively loop over all of the bits in a mask as in: * |