1/*  $OpenBSD: fenv.h,v 1.2 2011/05/25 21:46:49 martynas Exp $ */
2/*  $NetBSD: fenv.h,v 1.2.4.1 2011/02/08 16:18:55 bouyer Exp $  */
3
4/*
5 * Copyright (c) 2010 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef _FENV_H_
31#define _FENV_H_
32
33#include <sys/cdefs.h>
34#include <machine/fenv.h>
35
36__BEGIN_DECLS
37#pragma GCC visibility push(default)
38
39int feclearexcept(int);
40int fegetexceptflag(fexcept_t *, int);
41int feraiseexcept(int);
42int fesetexceptflag(const fexcept_t *, int);
43int fetestexcept(int);
44
45int fegetround(void);
46int fesetround(int);
47
48int fegetenv(fenv_t *);
49int feholdexcept(fenv_t *);
50int fesetenv(const fenv_t *);
51int feupdateenv(const fenv_t *);
52
53int feenableexcept(int);
54int fedisableexcept(int);
55int fegetexcept(void);
56
57/*
58 * The following constant represents the default floating-point environment
59 * (that is, the one installed at program startup) and has type pointer to
60 * const-qualified fenv_t.
61 *
62 * It can be used as an argument to the functions that manage the floating-point
63 * environment, namely fesetenv() and feupdateenv().
64 */
65extern const fenv_t __fe_dfl_env;
66#define FE_DFL_ENV  (&__fe_dfl_env)
67
68#pragma GCC visibility pop
69__END_DECLS
70
71#endif  /* ! _FENV_H_ */
72