fenv.h revision 1.23 
1/*	$NetBSD: fenv.h,v 1.23 2016/08/25 12:12:59 christos Exp $	*/
2/*
3 * Copyright (c) 2010 The NetBSD Foundation, Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
19 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27#ifndef _FENV_H_
28#define _FENV_H_
29
30#include <sys/featuretest.h>
31
32#if !defined(__aarch64__) && !defined(__arm__) && !defined(__i386__) \
33    && !defined(__hppa__) && !defined(__powerpc__) && !defined(__mips__) \
34    && !defined(__or1k__) && !defined(__riscv__) && !defined(__sparc__) \
35    && !defined(__x86_64__) && !defined(__alpha__) && !defined(__sh__) \
36    && !(defined(__m68k__) && !(defined(__mc68010__) || defined(__mcoldfire__)))
37# ifndef __TEST_FENV
38#  error	"fenv.h is currently not supported for this architecture"
39# endif
40typedef int fexcept_t;
41typedef int fenv_t;
42#else
43# define __HAVE_FENV
44# include <machine/fenv.h>
45#endif
46
47__BEGIN_DECLS
48
49/* Function prototypes */
50int	feclearexcept(int);
51int	fegetexceptflag(fexcept_t *, int);
52int	feraiseexcept(int);
53int	fesetexceptflag(const fexcept_t *, int);
54int	fetestexcept(int);
55int	fegetround(void);
56int	fesetround(int);
57int	fegetenv(fenv_t *);
58int	feholdexcept(fenv_t *);
59int	fesetenv(const fenv_t *);
60int	feupdateenv(const fenv_t *);
61
62#if defined(_NETBSD_SOURCE) || defined(_GNU_SOURCE)
63
64int	feenableexcept(int);
65int	fedisableexcept(int);
66int	fegetexcept(void);
67
68#endif /* _NETBSD_SOURCE || _GNU_SOURCE */
69
70__END_DECLS
71
72#endif /* ! _FENV_H_ */
73