diff options
Diffstat (limited to 'indra/llmath')
| -rwxr-xr-x | indra/llmath/llmath.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/indra/llmath/llmath.h b/indra/llmath/llmath.h index cad2461e9c..eeb5cd3ee6 100755 --- a/indra/llmath/llmath.h +++ b/indra/llmath/llmath.h @@ -113,6 +113,12 @@ inline bool is_approx_zero( F32 f ) { return (-F_APPROXIMATELY_ZERO < f) && (f < // WARNING: Infinity is comparable with F32_MAX and negative // infinity is comparable with F32_MIN +// handles negative and positive zeros +inline bool is_zero(F32 x) +{ + return (*(U32*)(&x) & 0x7fffffff) == 0; +} + inline bool is_approx_equal(F32 x, F32 y) { const S32 COMPARE_MANTISSA_UP_TO_BIT = 0x02; |