[thirdparty/glibc.git] / bits / iscanonical.h

/* Define iscanonical macro.
   Copyright (C) 2016-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef _MATH_H
# error "Never use <bits/iscanonical.h> directly; include <math.h> instead."
#endif

/* Return nonzero value if X is canonical.  By default, we only have
   IEEE interchange binary formats, in which all values are canonical,
   but the argument must still be converted to its semantic type for
   any exceptions arising from the conversion, before being
   discarded.  */
#define iscanonical(x) ((void) (__typeof (x)) (x), 1)
Commit	Line	Data
29cb9293	1	/* Define iscanonical macro.
04277e02	2	Copyright (C) 2016-2019 Free Software Foundation, Inc.
29cb9293 JM	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with the GNU C Library; if not, see
	17	<http://www.gnu.org/licenses/>. */
	18
	19	#ifndef _MATH_H
	20	# error "Never use <bits/iscanonical.h> directly; include <math.h> instead."
	21	#endif
	22
	23	/* Return nonzero value if X is canonical. By default, we only have
	24	IEEE interchange binary formats, in which all values are canonical,
	25	but the argument must still be converted to its semantic type for
	26	any exceptions arising from the conversion, before being
	27	discarded. */
	28	#define iscanonical(x) ((void) (__typeof (x)) (x), 1)