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strtold: Fix Infinity value.

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Infinity returned from strtold is recognized as NaN by GCC builtin
functions.  The reason is that ULtox is missing to set a bit.

	* libc/stdlib/strtorx.c (ULtox): Set high bit in second word
	to create valid Infinity value.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2016-03-26 20:27:18 +01:00
parent 18b47e05d3
commit 3e446e9723
1 changed files with 2 additions and 1 deletions
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3
newlib/libc/stdlib/strtorx.c
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@ -88,7 +88,8 @@ ULtox(__UShort *L, __ULong *bits, Long exp, int k)
case STRTOG_Infinite: case STRTOG_Infinite:
L[_0] = 0x7fff; L[_0] = 0x7fff;
L[_1] = L[_2] = L[_3] = L[_4] = 0; L[_1] = 0x8000;
L[_2] = L[_3] = L[_4] = 0;
break; break;
case STRTOG_NaN: case STRTOG_NaN: