111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/*  $OpenBSD: fenv.h,v 1.2 2011/05/25 21:46:49 martynas Exp $ */
211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/*  $NetBSD: fenv.h,v 1.2.4.1 2011/02/08 16:18:55 bouyer Exp $  */
311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/*
511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Copyright (c) 2010 The NetBSD Foundation, Inc.
611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * All rights reserved.
711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *
811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Redistribution and use in source and binary forms, with or without
911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * modification, are permitted provided that the following conditions
1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * are met:
1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 1. Redistributions of source code must retain the above copyright
1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *    notice, this list of conditions and the following disclaimer.
1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 2. Redistributions in binary form must reproduce the above copyright
1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *    notice, this list of conditions and the following disclaimer in the
1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *    documentation and/or other materials provided with the distribution.
1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *
1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
2211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
2411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * POSSIBILITY OF SUCH DAMAGE.
2811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */
2911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
3011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef _FENV_H_
3111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _FENV_H_
3211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
3311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <sys/cdefs.h>
3411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <machine/fenv.h>
3511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
3611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert__BEGIN_DECLS
3711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#pragma GCC visibility push(default)
3811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
3911cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint feclearexcept(int);
4011cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fegetexceptflag(fexcept_t *, int);
4111cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint feraiseexcept(int);
4211cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fesetexceptflag(const fexcept_t *, int);
4311cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fetestexcept(int);
4411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
4511cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fegetround(void);
4611cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fesetround(int);
4711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
4811cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fegetenv(fenv_t *);
4911cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint feholdexcept(fenv_t *);
5011cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fesetenv(const fenv_t *);
5111cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint feupdateenv(const fenv_t *);
5211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
5311cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint feenableexcept(int);
5411cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fedisableexcept(int);
5511cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint fegetexcept(void);
5611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
5711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/*
5811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * The following constant represents the default floating-point environment
5911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * (that is, the one installed at program startup) and has type pointer to
6011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * const-qualified fenv_t.
6111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *
6211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * It can be used as an argument to the functions that manage the floating-point
6311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * environment, namely fesetenv() and feupdateenv().
6411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */
6511cd02dfb91661c65134cac258cf5924270e9d2Dan Albertextern const fenv_t __fe_dfl_env;
6611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define FE_DFL_ENV  (&__fe_dfl_env)
6711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
6811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#pragma GCC visibility pop
6911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert__END_DECLS
7011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert
7111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif  /* ! _FENV_H_ */
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