diff options
| author | Marek Olšák <[email protected]> | 2015-01-31 17:15:16 +0100 |
|---|---|---|
| committer | Marek Olšák <[email protected]> | 2015-02-04 14:34:13 +0100 |
| commit | 50433ea526942dbeac75cc415becadea157e5d33 (patch) | |
| tree | 00e9c1cb85f1931f1856024df3081a2c59169c2b /src/gallium/auxiliary/util/u_math.h | |
| parent | f2328ffdc80d0ea817b2f3f802dae6b2210fbfe2 (diff) | |
gallium/util: add u_bit_scan64
Same as u_bit_scan, but for uint64_t.
Reviewed-by: Glenn Kennard <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Diffstat (limited to 'src/gallium/auxiliary/util/u_math.h')
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h index ca6d0f1dfc8..8eb840f1ec0 100644 --- a/src/gallium/auxiliary/util/u_math.h +++ b/src/gallium/auxiliary/util/u_math.h @@ -583,6 +583,13 @@ u_bit_scan(unsigned *mask) return i; } +static INLINE int +u_bit_scan64(uint64_t *mask) +{ + int i = ffsll(*mask) - 1; + *mask &= ~(1llu << i); + return i; +} /** * Return float bits. |