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GNU C Library master sources branch master updated. glibc-2.23-450-g59e53a7
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 9 Jun 2016 17:24:10 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.23-450-g59e53a7
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=59e53a78985be92134f126c5597d15a9998001d1
commit 59e53a78985be92134f126c5597d15a9998001d1
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Jun 9 17:23:51 2016 +0000
Fix ldbl-128 expm1l (sNaN) (bug 20232).
The ldbl-128 version of expm1l returns sNaN for sNaN input. This
patch fixes it to add such inputs to themselves so that qNaN is
returned in this case.
Tested for mips64.
[BZ #20232]
* sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Add NaN input to
itself.
diff --git a/ChangeLog b/ChangeLog
index f72f22e..2d88f74 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2016-06-09 Joseph Myers <joseph@codesourcery.com>
+
+ [BZ #20232]
+ * sysdeps/ieee754/ldbl-128/s_expm1l.c (__expm1l): Add NaN input to
+ itself.
+
2016-06-09 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/start.S (_start): Always indirect branch to
diff --git a/sysdeps/ieee754/ldbl-128/s_expm1l.c b/sysdeps/ieee754/ldbl-128/s_expm1l.c
index b1100a9..da902ef 100644
--- a/sysdeps/ieee754/ldbl-128/s_expm1l.c
+++ b/sysdeps/ieee754/ldbl-128/s_expm1l.c
@@ -111,8 +111,8 @@ __expm1l (long double x)
/* Infinity (which must be negative infinity). */
if (((ix & 0xffff) | u.parts32.w1 | u.parts32.w2 | u.parts32.w3) == 0)
return -1.0L;
- /* NaN. No invalid exception. */
- return x;
+ /* NaN. Invalid exception if signaling. */
+ return x + x;
}
/* expm1(+- 0) = +- 0. */
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
sysdeps/ieee754/ldbl-128/s_expm1l.c | 4 ++--
2 files changed, 8 insertions(+), 2 deletions(-)
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