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Fix modf/f for NaN input 

For NaN input the modf/f procedures should return NaN instead of zero
with the sign of the input.
This commit is contained in:
Fabian Schriever 2020-03-18 14:18:20 +01:00 committed by Corinna Vinschen
parent 9e8da7bd21
commit 4ad9ba42fc
2 changed files with 2 additions and 0 deletions
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1
newlib/libm/common/s_modf.c
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@ -100,6 +100,7 @@ static double one = 1.0;
} else if (j0>51) { /* no fraction part */ } else if (j0>51) { /* no fraction part */
__uint32_t high; __uint32_t high;
*iptr = x*one; *iptr = x*one;
if (__fpclassifyd(x) == FP_NAN) return x+x; /* x is NaN, return NaN */
GET_HIGH_WORD(high,x); GET_HIGH_WORD(high,x);
INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */ INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */
return x; return x;

1
newlib/libm/common/sf_modf.c
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@ -52,6 +52,7 @@ static float one = 1.0;
} else { /* no fraction part */ } else { /* no fraction part */
__uint32_t ix; __uint32_t ix;
*iptr = x*one; *iptr = x*one;
if (__fpclassifyf(x) == FP_NAN) return x+x; /* x is NaN, return NaN */
GET_FLOAT_WORD(ix,x); GET_FLOAT_WORD(ix,x);
SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */ SET_FLOAT_WORD(x,ix&0x80000000); /* return +-0 */
return x; return x;