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math: cosmetic cleanup (use explicit union instead of fshape and dshape)

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Szabolcs Nagy 2013-09-04 17:36:00 +00:00
commit 8dba548628
11 changed files with 140 additions and 166 deletions
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11
src/math/__fpclassify.c
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@ -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;
}