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-rw-r--r--ChangeLog7
-rw-r--r--NEWS2
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/e_acoshl.c4
3 files changed, 10 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index cb91ca7ede..4fae701843 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2014-01-02  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #16384]
+	* sysdeps/ieee754/ldbl-128ibm/e_acoshl.c (ln2): Initialize with
+	M_LN2l.
+	(__ieee754_acoshl): Use __log1pl not __log1p.
+
 2013-01-02  Ondřej Bílka  <neleai@seznam.cz>
 
 	* malloc/arena.c (malloc_atfork, free_atfork, ptmalloc_lock_all,
diff --git a/NEWS b/NEWS
index 47ab1217de..c53be8aeba 100644
--- a/NEWS
+++ b/NEWS
@@ -23,7 +23,7 @@ Version 2.19
   16038, 16041, 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112,
   16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214,
   16245, 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337,
-  16338, 16356, 16365, 16366, 16369, 16372, 16375, 16379.
+  16338, 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16384.
 
 * Slovenian translations for glibc messages have been contributed by the
   Translation Project's Slovenian team of translators.
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_acoshl.c b/sysdeps/ieee754/ldbl-128ibm/e_acoshl.c
index 8a4a5bb7b9..b0b33f7520 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_acoshl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_acoshl.c
@@ -29,7 +29,7 @@
 
 static const long double
 one	= 1.0L,
-ln2	= 6.93147180559945286227e-01L;  /* 0x3FE62E42, 0xFEFA39EF */
+ln2	= M_LN2l;
 
 long double
 __ieee754_acoshl(long double x)
@@ -56,7 +56,7 @@ __ieee754_acoshl(long double x)
 	    return __ieee754_logl(2.0*x-one/(x+__ieee754_sqrtl(t-one)));
 	} else {			/* 1<x<2 */
 	    t = x-one;
-	    return __log1p(t+__ieee754_sqrtl(2.0*t+t*t));
+	    return __log1pl(t+__ieee754_sqrtl(2.0*t+t*t));
 	}
 }
 strong_alias (__ieee754_acoshl, __acoshl_finite)