minix3-3.4.0/include/fenv.h

1 /*	$NetBSD: fenv.h,v 1.13 2014/12/27 16:54:02 martin 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 
28 #if !defined(__aarch64__) && !defined(__arm__) && !defined(__i386__) \
29     && !defined(__hppa__) \
30     && !defined(__or1k__) && !defined(__riscv__) && !defined(__sparc__) \
31     && !defined(__x86_64__)
32 #error	"fenv.h is currently not supported for this architecture"
33 #endif
34 
35 #ifndef _FENV_H_
36 #define _FENV_H_
37 
38 #include <sys/featuretest.h>
39 #include <machine/fenv.h>
40 
41 __BEGIN_DECLS
42 
43 /* Function prototypes */
44 int	feclearexcept(int);
45 int	fegetexceptflag(fexcept_t *, int);
46 int	feraiseexcept(int);
47 int	fesetexceptflag(const fexcept_t *, int);
48 int	fetestexcept(int);
49 int	fegetround(void);
50 int	fesetround(int);
51 int	fegetenv(fenv_t *);
52 int	feholdexcept(fenv_t *);
53 int	fesetenv(const fenv_t *);
54 int	feupdateenv(const fenv_t *);
55 
56 #if defined(_NETBSD_SOURCE) || defined(_GNU_SOURCE)
57 
58 int	feenableexcept(int mask);
59 int	fedisableexcept(int mask);
60 int	fegetexcept(void);
61 
62 #endif /* _NETBSD_SOURCE || _GNU_SOURCE */
63 
64 __END_DECLS
65 
66 #endif /* ! _FENV_H_ */