diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_math.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_math.h b/mesalib/src/gallium/auxiliary/util/u_math.h index 39bd40fa1..f95c11166 100644 --- a/mesalib/src/gallium/auxiliary/util/u_math.h +++ b/mesalib/src/gallium/auxiliary/util/u_math.h @@ -727,6 +727,18 @@ util_bitcount(unsigned n) #endif } + +static INLINE unsigned +util_bitcount64(uint64_t n) +{ +#ifdef HAVE___BUILTIN_POPCOUNTLL + return __builtin_popcountll(n); +#else + return util_bitcount(n) + util_bitcount(n >> 32); +#endif +} + + /** * Reverse bits in n * Algorithm taken from: |