SSE: Review usage of vminf, vmaxf functions, #4942

2018-11-05 15:59:41 +01:00
parent fa91103aec
commit 0983817434
8 changed files with 28 additions and 23 deletions
--- a/rtengine/helpersse2.h
+++ b/rtengine/helpersse2.h
@@ -157,10 +157,14 @@ static INLINE vfloat vsqrtf(vfloat x)
 }
 static INLINE vfloat vmaxf(vfloat x, vfloat y)
 {
+    // _mm_max_ps(x, y) returns y if x is NaN
+    // don't change the order of the parameters
    return _mm_max_ps(x, y);
 }
 static INLINE vfloat vminf(vfloat x, vfloat y)
 {
+    // _mm_min_ps(x, y) returns y if x is NaN
+    // don't change the order of the parameters
    return _mm_min_ps(x, y);
 }