From: Joseph Myers <joseph@codesourcery.com>
Date: Wed, 28 Nov 2012 21:46:16 +0000 (+0000)
Subject: Use hex float 64-bit values in ldbl-96 asinl (bug 14803).
X-Git-Tag: glibc-2.17~99
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9984dd012623633f6e48d6d189a8df7d6c308535;p=thirdparty%2Fglibc.git

Use hex float 64-bit values in ldbl-96 asinl (bug 14803).
---

diff --git a/ChangeLog b/ChangeLog
index b74cde7e69a..1cff12d4f2b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2012-11-28  Joseph Myers  <joseph@codesourcery.com>
+
+	[BZ #14803]
+	* sysdeps/ieee754/ldbl-96/e_asinl.c (pio2_hi): Use hex float value
+	of pi/2 rounded to nearest to 64 bits.
+	(pio2_lo): Use hex float value of pi/2 - pio2_hi rounded to
+	nearest to 64 bits.
+	(pio4_hi): Use hex float value of pi/4 rounded to nearest to 64
+	bits.
+
 2012-11-28  Jeff Law <law@redhat.com>
 	    Martin Osvald <mosvald@redhat.com>
 
diff --git a/NEWS b/NEWS
index 4a17295d411..7adaa272c59 100644
--- a/NEWS
+++ b/NEWS
@@ -20,9 +20,9 @@ Version 2.17
   14557, 14562, 14568, 14576, 14579, 14583, 14587, 14595, 14602, 14610,
   14621, 14638, 14645, 14648, 14652, 14660, 14661, 14669, 14672, 14683,
   14694, 14716, 14719, 14743, 14767, 14783, 14784, 14785, 14793, 14796,
-  14797, 14801, 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828,
-  14831, 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871,
-  14889.
+  14797, 14801, 14803, 14805, 14807, 14811, 14815, 14821, 14822, 14824,
+  14828, 14831, 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869,
+  14871, 14889.
 
 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
   EMFILE has been fixed (Bugzilla #14889).
diff --git a/sysdeps/ieee754/ldbl-96/e_asinl.c b/sysdeps/ieee754/ldbl-96/e_asinl.c
index c33701f11e6..c1ffa3e0d9e 100644
--- a/sysdeps/ieee754/ldbl-96/e_asinl.c
+++ b/sysdeps/ieee754/ldbl-96/e_asinl.c
@@ -64,9 +64,12 @@
 static const long double
   one = 1.0L,
   huge = 1.0e+4932L,
- pio2_hi = 1.5707963267948966192021943710788178805159986950457096099853515625L,
-  pio2_lo = 2.9127320560933561582586004641843300502121E-20L,
-  pio4_hi = 7.8539816339744830960109718553940894025800E-1L,
+  pio2_hi = 0x1.921fb54442d1846ap+0L, /* pi/2 rounded to nearest to 64
+					 bits.  */
+  pio2_lo = -0x7.6733ae8fe47c65d8p-68L, /* pi/2 - pio2_hi rounded to
+					   nearest to 64 bits.  */
+  pio4_hi = 0xc.90fdaa22168c235p-4L, /* pi/4 rounded to nearest to 64
+					bits.  */
 
 	/* coefficient for R(x^2) */