about summary refs log tree commit diff
path: root/sysdeps/alpha
diff options
context:
space:
mode:
authorAurelien Jarno <aurelien@aurel32.net>2016-08-02 09:18:59 +0200
committerAurelien Jarno <aurelien@aurel32.net>2016-08-02 09:18:59 +0200
commitcb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b (patch)
tree43551aa2edac9c7863c3fce087e901f48c45cb1c /sysdeps/alpha
parent65cc568cf57156e5230db9a061645e54ff028a41 (diff)
downloadglibc-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.
Diffstat (limited to 'sysdeps/alpha')
-rw-r--r--sysdeps/alpha/fpu/s_rint.c3
-rw-r--r--sysdeps/alpha/fpu/s_rintf.c3
2 files changed, 6 insertions, 0 deletions
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