diff options
| -rw-r--r-- | source/blender/blenlib/intern/math_bits_inline.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/source/blender/blenlib/intern/math_bits_inline.c b/source/blender/blenlib/intern/math_bits_inline.c index fdef0f9c9c6..e967ecbb3a3 100644 --- a/source/blender/blenlib/intern/math_bits_inline.c +++ b/source/blender/blenlib/intern/math_bits_inline.c @@ -63,12 +63,10 @@ MINLINE unsigned int bitscan_reverse_uint(unsigned int a) MINLINE unsigned int highest_order_bit_uint(unsigned int n) { - n |= (n >> 1); - n |= (n >> 2); - n |= (n >> 4); - n |= (n >> 8); - n |= (n >> 16); - return n - (n >> 1); + if (n == 0) { + return 0; + } + return 1 << (sizeof(unsigned int) * 8 - bitscan_reverse_uint(n)); } MINLINE unsigned short highest_order_bit_s(unsigned short n) |