diff options
-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 d983af33203..10f158b7086 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -529,6 +529,20 @@ u_bit_scan_consecutive_range(unsigned *mask, int *start, int *count) *mask &= ~(((1u << *count) - 1) << *start); } +static inline void +u_bit_scan_consecutive_range64(uint64_t *mask, int *start, int *count) +{ + if (*mask == ~0llu) { + *start = 0; + *count = 64; + *mask = 0; + return; + } + *start = ffsll(*mask) - 1; + *count = ffsll(~(*mask >> *start)) - 1; + *mask &= ~(((1llu << *count) - 1) << *start); +} + /** * Return float bits. */ |