1 files changed, 6 insertions, 5 deletions
diff --git a/src/math/__fpclassify.c b/src/math/__fpclassify.c
index c9dd0275..f7c0e2df 100644
--- a/src/math/__fpclassify.c
+++ b/src/math/__fpclassify.c
@@ -1,10 +1,11 @@
-#include "libm.h"
+#include <math.h>
+#include <stdint.h>
 
 int __fpclassify(double x)
 {
-	union dshape u = { x };
-	int e = u.bits>>52 & 0x7ff;
-	if (!e) return u.bits<<1 ? FP_SUBNORMAL : FP_ZERO;
-	if (e==0x7ff) return u.bits<<12 ? FP_NAN : FP_INFINITE;
+	union {double f; uint64_t i;} u = {x};
+	int e = u.i>>52 & 0x7ff;
+	if (!e) return u.i<<1 ? FP_SUBNORMAL : FP_ZERO;
+	if (e==0x7ff) return u.i<<12 ? FP_NAN : FP_INFINITE;
 	return FP_NORMAL;
 }