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new modff.c code, fix nan handling in modfl

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This commit is contained in:
nsz 2012-03-19 23:27:45 +01:00
commit 75483499da
2 changed files with 26 additions and 44 deletions
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4
src/math/modfl.c
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@ -54,7 +54,7 @@ long double modfl(long double x, long double *iptr)
/* The number of fraction bits in manh, not counting the integer bit */
#define HIBITS (LDBL_MANT_DIG - LDBL_MANL_SIZE)
static const long double zero[] = { 0.0L, -0.0L };
static const long double zero[] = { 0.0, -0.0 };
long double modfl(long double x, long double *iptr)
{
@ -81,7 +81,7 @@ long double modfl(long double x, long double *iptr)
return x - ux.e;
} else if (e >= LDBL_MANT_DIG - 1) { /* x has no fraction part. */
*iptr = x;
if (x != x) /* Handle NaNs. */
if (e == LDBL_MAX_EXP && (ux.bits.manh|ux.bits.manl)) /* nan */
return x;
return zero[ux.bits.sign];
} else { /* Fraction part is in manl. */