Mercurial > gnulib
view tests/nan.h @ 11224:5aa57cee93aa
avoid gcc 3.4.3 bug on long double NaN on Irix 6.5
* tests/nan.h (NaNl): Rewrite as function on Irix, to avoid
compilation bug by using runtime conversion.
* m4/isfinite.m4 (gl_ISFINITE): Likewise.
* m4/isnanl.m4 (gl_FUNC_ISNANL): Likewise.
* modules/ceill-tests (Files): Use nan.h.
* modules/floorl-tests (Files): Likewise.
* modules/frexpl-tests (Files): Likewise.
* modules/isnanl-tests (Files): Likewise.
* modules/ldexpl-tests (Files): Likewise.
* modules/roundl-tests (Files): Likewise.
* modules/truncl-tests (Files): Likewise.
* tests/test-ceill.c (main): Use a working NaN.
* tests/test-floorl.c (main): Likewise.
* tests/test-frexpl.c (main): Likewise.
* tests/test-isnan.c (test_long_double): Likewise.
* tests/test-isnanl.h (main): Likewise.
* tests/test-ldexpl.h (main): Likewise.
* tests/test-roundl.h (main): Likewise.
* tests/test-truncl.h (main): Likewise.
See http://lists.gnu.org/archive/html/bug-gnulib/2009-02/msg00190.html.
Signed-off-by: Eric Blake <ebb9@byu.net>
author | Eric Blake <ebb9@byu.net> |
---|---|
date | Thu, 26 Feb 2009 20:18:42 -0700 |
parents | baba3b346ab2 |
children | c2cbabec01dd |
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/* Macros for not-a-number. Copyright (C) 2007-2009 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* NaNf () returns a 'float' not-a-number. */ /* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0. */ #ifdef __DECC static float NaNf () { static float zero = 0.0f; return zero / zero; } #else # define NaNf() (0.0f / 0.0f) #endif /* NaNd () returns a 'double' not-a-number. */ /* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0. */ #ifdef __DECC static double NaNd () { static double zero = 0.0; return zero / zero; } #else # define NaNd() (0.0 / 0.0) #endif /* NaNl () returns a 'long double' not-a-number. */ /* On Irix 6.5, gcc 3.4.3 can't compute compile-time NaN, and needs the runtime type conversion. */ #ifdef __sgi static long double NaNl () { double zero = 0.0; return zero / zero; } #else # define NaNl() (0.0L / 0.0L) #endif