diff options
Diffstat (limited to 'source/blender/blenlib/intern/math_base_inline.c')
| -rw-r--r-- | source/blender/blenlib/intern/math_base_inline.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_base_inline.c b/source/blender/blenlib/intern/math_base_inline.c index 47327a878d4..0309876d8fb 100644 --- a/source/blender/blenlib/intern/math_base_inline.c +++ b/source/blender/blenlib/intern/math_base_inline.c @@ -230,6 +230,21 @@ MINLINE unsigned power_of_2_min_u(unsigned x) return x - (x >> 1); } +MINLINE unsigned int log2_floor_u(unsigned int x) +{ + return x <= 1 ? 0 : 1 + log2_floor_u(x >> 1); +} + +MINLINE unsigned int log2_ceil_u(unsigned int x) +{ + if (is_power_of_2_i((int)x)) { + return log2_floor_u(x); + } + else { + return log2_floor_u(x) + 1; + } +} + /* rounding and clamping */ #define _round_clamp_fl_impl(arg, ty, min, max) \ |