-#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;
}