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Bruno Haible
27 lines
993 B
C
27 lines
993 B
C
/* Test for NaN that does not need libm.
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Copyright (C) 2007 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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#if HAVE_ISNAN_IN_LIBC
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/* Get declaration of isnan macro. */
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# include <math.h>
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#else
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/* Test whether X is a NaN. */
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# undef isnan
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# define isnan rpl_isnan
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extern int isnan (double x);
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#endif
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