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-rw-r--r--src/math/isnormal.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/src/math/isnormal.c b/src/math/isnormal.c
index 5702fc94..868c7ea2 100644
--- a/src/math/isnormal.c
+++ b/src/math/isnormal.c
@@ -1,10 +1,6 @@
#include <math.h>
- int __isnormalf(float x);
- int __isnormald(double x);
- int __isnormall(long double x);
-#define isnormal(x) ((sizeof (x) == sizeof (float)) ? __isnormalf(x) : \
- (sizeof (x) == sizeof (double)) ? __isnormald(x) : __isnormall(x))
+#define isnormal(x) (fpclassify(x) == FP_NORMAL)
/*
STDC(199901)