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GNU C Library master sources branch master updated. glibc-2.23-452-gb7519f6
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 9 Jun 2016 17:26:14 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.23-452-gb7519f6
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=b7519f61fe2c57981c69c0c65996968b9a4d9b62
commit b7519f61fe2c57981c69c0c65996968b9a4d9b62
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Jun 9 17:25:54 2016 +0000
Fix ldbl-128ibm log1pl (sNaN) (bug 20234).
The ldbl-128ibm version of log1pl 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 powerpc.
[BZ #20234]
* sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Add positive
infinity or NaN input to itself.
diff --git a/ChangeLog b/ChangeLog
index 6944ac5..81192ce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
2016-06-09 Joseph Myers <joseph@codesourcery.com>
+ [BZ #20234]
+ * sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Add positive
+ infinity or NaN input to itself.
+
[BZ #20233]
* sysdeps/ieee754/ldbl-128ibm/s_expm1l.c (__expm1l): Add NaN input
to itself.
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_log1pl.c b/sysdeps/ieee754/ldbl-128ibm/s_log1pl.c
index 743693b..5457892 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_log1pl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_log1pl.c
@@ -132,7 +132,7 @@ __log1pl (long double xm1)
xhi = ldbl_high (xm1);
EXTRACT_WORDS (hx, lx, xhi);
if (hx >= 0x7ff00000)
- return xm1;
+ return xm1 + xm1;
/* log1p(+- 0) = +- 0. */
if (((hx & 0x7fffffff) | lx) == 0)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
sysdeps/ieee754/ldbl-128ibm/s_log1pl.c | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
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