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alpha: fix rint on sNaN input

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The alpha version of rint wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.

Changelog:
	* sysdeps/alpha/fpu/s_rint.c (__rint): Add argument with itself
	when it is a NaN.
	* sysdeps/alpha/fpu/s_rintf.c (__rintf): Likewise.
This commit is contained in:
Aurelien Jarno
2016-08-02 09:18:59 +02:00
parent 65cc568cf5
commit cb7f9d63b9
3 changed files with 9 additions and 0 deletions
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3
sysdeps/alpha/fpu/s_rint.c
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@@ -23,6 +23,9 @@
double
__rint (double x)
{
if (isnan (x))
return x + x;
if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
{
double tmp1, new_x;