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GNU C Library master sources branch, master, updated. glibc-2.14-403-g8ec250a
- From: drepper at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 21 Oct 2011 16:29:20 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.14-403-g8ec250a
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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=8ec250a48425e8640fc01504bc1a42b63467768e
commit 8ec250a48425e8640fc01504bc1a42b63467768e
Author: Ulrich Drepper <drepper@gmail.com>
Date: Fri Oct 21 12:28:42 2011 -0400
Add some __builtin_expect to generic __ieee754_log
diff --git a/ChangeLog b/ChangeLog
index b2d629b..404e1fe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2011-10-21 Ulrich Drepper <drepper@gmail.com>
+
+ * sysdeps/ieee754/dbl-64/e_log.c (__ieee754_log): Add a few more
+ __builtin_expect.
+
2011-10-20 Ulrich Drepper <drepper@gmail.com>
* sysdeps/i386/configure.in: Test for -mfma4 option.
diff --git a/sysdeps/ieee754/dbl-64/e_log.c b/sysdeps/ieee754/dbl-64/e_log.c
index 5d320db..0fc6f92 100644
--- a/sysdeps/ieee754/dbl-64/e_log.c
+++ b/sysdeps/ieee754/dbl-64/e_log.c
@@ -1,7 +1,7 @@
/*
* IBM Accurate Mathematical Library
* written by International Business Machines Corp.
- * Copyright (C) 2001 Free Software Foundation
+ * Copyright (C) 2001, 2011 Free Software Foundation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
@@ -68,7 +68,7 @@ double __ieee754_log(double x) {
num.d = x; ux = num.i[HIGH_HALF]; dx = num.i[LOW_HALF];
n=0;
- if (ux < 0x00100000) {
+ if (__builtin_expect(ux < 0x00100000, 0)) {
if (__builtin_expect(((ux & 0x7fffffff) | dx) == 0, 0))
return MHALF/ZERO; /* return -INF */
if (__builtin_expect(ux < 0, 0))
@@ -82,7 +82,7 @@ double __ieee754_log(double x) {
/* Regular values of x */
w = x-ONE;
- if (ABS(w) > U03) { goto case_03; }
+ if (__builtin_expect(ABS(w) > U03, 1)) { goto case_03; }
/*--- Stage I, the case abs(x-1) < 0.03 */
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/ieee754/dbl-64/e_log.c | 6 +++---
2 files changed, 8 insertions(+), 3 deletions(-)
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