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| author | Aurelien Jarno <aurelien@aurel32.net> | 2016-08-02 09:18:59 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2016-08-02 09:18:59 +0200 |
| commit | cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b (patch) | |
| tree | 43551aa2edac9c7863c3fce087e901f48c45cb1c | |
| parent | 65cc568cf57156e5230db9a061645e54ff028a41 (diff) | |
| download | glibc-cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b.tar.gz glibc-cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b.tar.xz glibc-cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b.zip | |
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.
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | sysdeps/alpha/fpu/s_rint.c | 3 | ||||
| -rw-r--r-- | sysdeps/alpha/fpu/s_rintf.c | 3 |
3 files changed, 9 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index d675adc994..fa362a590e 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 <carlos@redhat.com> diff --git a/sysdeps/alpha/fpu/s_rint.c b/sysdeps/alpha/fpu/s_rint.c index f33fe72c11..259348afc0 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 1400dfe8d7..645728ad5b 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 |