optimize isnan()

diff --git a/qcsrc/warpzonelib/mathlib.qc b/qcsrc/warpzonelib/mathlib.qc
index b460a063dbe04c13460e6e2fc6d19f72827285b6..42262102e50b16421ae0a80003ba817bf8c34b58 100644 (file)
--- a/qcsrc/warpzonelib/mathlib.qc
+++ b/qcsrc/warpzonelib/mathlib.qc
@@ -18,7 +18,9 @@ int isinf(float x)
 }
 int isnan(float x)
 {
-       return !(x + x == x + x);
+       float y;
+       y = x;
+       return (x != y);
 }
 int isnormal(float x)
 {