Making NaN detection more robust to -ffast-math.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/mlp.c b/src/mlp.c
index 46386026..524e7711 100644
--- a/src/mlp.c
+++ b/src/mlp.c
@@ -75,6 +75,11 @@ static OPUS_INLINE float tansig_approx(float x)
         return 1;
     if (!(x>-8))
         return -1;
+#ifndef FIXED_POINT
+    /* Another check in case of -ffast-math */
+    if (celt_isnan(x))
+       return 0;
+#endif
 	if (x<0)
 	{
 	   x=-x;