From cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Tue, 2 Aug 2016 09:18:59 +0200 Subject: alpha: fix rint on sNaN input 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. --- ChangeLog | 3 +++ sysdeps/alpha/fpu/s_rint.c | 3 +++ sysdeps/alpha/fpu/s_rintf.c | 3 +++ 3 files changed, 9 insertions(+) diff --git a/ChangeLog b/ChangeLog index d675adc..fa362a5 100644 --- a/ChangeLog +++ b/ChangeLog @@ -8,6 +8,9 @@ when it is a NaN. [_IEEE_FP_INEXACT] Remove. * sysdeps/alpha/fpu/s_floorf.c (__floorf): Likewise. + * sysdeps/alpha/fpu/s_rint.c (__rint): Add argument with itself + when it is a NaN. + * sysdeps/alpha/fpu/s_rintf.c (__rintf): Likewise. 2016-08-01 Carlos O'Donell diff --git a/sysdeps/alpha/fpu/s_rint.c b/sysdeps/alpha/fpu/s_rint.c index f33fe72..259348a 100644 --- a/sysdeps/alpha/fpu/s_rint.c +++ b/sysdeps/alpha/fpu/s_rint.c @@ -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; diff --git a/sysdeps/alpha/fpu/s_rintf.c b/sysdeps/alpha/fpu/s_rintf.c index 1400dfe..645728a 100644 --- a/sysdeps/alpha/fpu/s_rintf.c +++ b/sysdeps/alpha/fpu/s_rintf.c @@ -22,6 +22,9 @@ float __rintf (float x) { + if (isnanf (x)) + return x + x; + if (isless (fabsf (x), 16777216.0f)) /* 1 << FLT_MANT_DIG */ { /* Note that Alpha S_Floating is stored in registers in a -- cgit v1.1