diff options
| author | John David Anglin <dave.anglin@nrc-cnrc.gc.ca> | 2005-04-11 03:06:13 +0000 |
|---|---|---|
| committer | John David Anglin <danglin@gcc.gnu.org> | 2005-04-11 03:06:13 +0000 |
| commit | 0dbca30748132482886593434b14d7242cdee9ad (patch) | |
| tree | 69ffd9a8c0f39941740540ffcd7bba658decd014 /gcc | |
| parent | dcec6a4d7a09ecd7ccacff89778039663070fc4a (diff) | |
| download | gcc-0dbca30748132482886593434b14d7242cdee9ad.zip gcc-0dbca30748132482886593434b14d7242cdee9ad.tar.gz gcc-0dbca30748132482886593434b14d7242cdee9ad.tar.bz2 | |
quadlib.c (_U_Qfneg): Toggle sign bit instead of subtracting from zero.
* pa/quadlib.c (_U_Qfneg): Toggle sign bit instead of subtracting from
zero.
From-SVN: r97961
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/pa/quadlib.c | 14 |
2 files changed, 16 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8824718..8a0a77b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-04-10 John David Anglin <dave.anglin@nrc-cnrc.gc.ca> + + * pa/quadlib.c (_U_Qfneg): Toggle sign bit instead of subtracting from + zero. + 2005-04-10 Kazu Hirata <kazu@cs.umass.edu> * config/arm/arm.c: Fix a comment typo. diff --git a/gcc/config/pa/quadlib.c b/gcc/config/pa/quadlib.c index 6dbfdcf..c377417 100644 --- a/gcc/config/pa/quadlib.c +++ b/gcc/config/pa/quadlib.c @@ -1,5 +1,5 @@ /* Subroutines for long double support. - Copyright (C) 2000, 2002, 2004 Free Software Foundation, Inc. + Copyright (C) 2000, 2002, 2004, 2005 Free Software Foundation, Inc. This file is part of GCC. @@ -160,11 +160,19 @@ _U_Qfcomp (long double a, long double b) } -/* This violates the IEEE standard. It is better to multiply by -1.0L. */ +/* Negate long double A. */ long double _U_Qfneg (long double a) { - return (0.0L - a); + union + { + long double ld; + int i[4]; + } u; + + u.ld = a; + u.i[0] ^= 0x80000000; + return u.ld; } #ifdef __LP64__ |