Mercurial > hg > octave-nkf > gnulib-hg
view lib/isnand-nolibm.h @ 17935:0ad1f4c9eed5 default tip
tests: support stderr verification with returns_()
* tests/init.sh (returns_): Disable tracing for this wrapper
function, so that stderr of the wrapped command is unchanged,
allowing for verification of the contents.
author | Pádraig Brady <P@draigBrady.com> |
---|---|
date | Mon, 16 Feb 2015 17:20:39 +0000 (2015-02-16) |
parents | ab58d4870664 |
children |
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/* Test for NaN that does not need libm. Copyright (C) 2007-2015 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/>. */ #if HAVE_ISNAND_IN_LIBC /* Get declaration of isnan macro. */ # include <math.h> # if __GNUC__ >= 4 /* GCC 4.0 and newer provides three built-ins for isnan. */ # undef isnand # define isnand(x) __builtin_isnan ((double)(x)) # else # undef isnand # define isnand(x) isnan ((double)(x)) # endif #else /* Test whether X is a NaN. */ # undef isnand # define isnand rpl_isnand extern int isnand (double x); #endif