GNU C Library master sources branch master updated. glibc-2.22-588-gf517e06

jsm28@sourceware.org jsm28@sourceware.org
Wed Dec 9 22:37:00 GMT 2015


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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=f517e06ab71e07b24bf085063b0ba2d072da4a56

commit f517e06ab71e07b24bf085063b0ba2d072da4a56
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Dec 9 22:37:08 2015 +0000

    Fix ldbl-128ibm sinhl spurious overflows (bug 19350).
    
    The ldbl-128ibm implementation of sinhl uses a slightly too small
    overflow threshold (similar to bug 16407 for coshl).  This patch fixes
    it to use a safe threshold (so that values whose high part is above
    the value compared with definitely result in an overflow in all
    rounding modes).
    
    Tested for powerpc.
    
    	[BZ #19350]
    	* sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl):
    	Increase overflow threshold.

diff --git a/ChangeLog b/ChangeLog
index b76c54b..1c7b198 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2015-12-09  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #19350]
+	* sysdeps/ieee754/ldbl-128ibm/e_sinhl.c (__ieee754_sinhl):
+	Increase overflow threshold.
+
 	[BZ #19349]
 	* sysdeps/ieee754/ldbl-128ibm/s_tanhl.c (__tanhl): Return argument
 	when small.
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c b/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c
index 29700ad..67d9d24 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_sinhl.c
@@ -67,7 +67,7 @@ __ieee754_sinhl(long double x)
 	if (ix < 0x40862e42fefa39efLL)  return h*__ieee754_expl(fabsl(x));
 
     /* |x| in [log(maxdouble), overflowthresold] */
-	if (ix <= 0x408633ce8fb9f87dLL) {
+	if (ix <= 0x408633ce8fb9f87eLL) {
 	    w = __ieee754_expl(0.5*fabsl(x));
 	    t = h*w;
 	    return t*w;

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                             |    4 ++++
 sysdeps/ieee754/ldbl-128ibm/e_sinhl.c |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)


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