include/fenv.h

   1 /*      $NetBSD: fenv.h,v 1.9 2013/04/28 21:07:36 matt 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(__arm__) && !defined(__i386__) \
  29     && !defined(__sparc__) && !defined(__x86_64__)
  30 #error  "fenv.h is currently not supported for this architecture"
  31 #endif
  32
  33 #ifndef _FENV_H_
  34 #define _FENV_H_
  35
  36 #include <sys/featuretest.h>
  37 #include <machine/fenv.h>
  38
  39 __BEGIN_DECLS
  40
  41 /* Function prototypes */
  42 int     feclearexcept(int);
  43 int     fegetexceptflag(fexcept_t *, int);
  44 int     feraiseexcept(int);
  45 int     fesetexceptflag(const fexcept_t *, int);
  46 int     fetestexcept(int);
  47 int     fegetround(void);
  48 int     fesetround(int);
  49 int     fegetenv(fenv_t *);
  50 int     feholdexcept(fenv_t *);
  51 int     fesetenv(const fenv_t *);
  52 int     feupdateenv(const fenv_t *);
  53
  54 #if defined(_NETBSD_SOURCE) || defined(_GNU_SOURCE)
  55
  56 int     feenableexcept(int mask);
  57 int     fedisableexcept(int mask);
  58 int     fegetexcept(void);
  59
  60 #endif /* _NETBSD_SOURCE || _GNU_SOURCE */
  61
  62 __END_DECLS
  63
  64 #endif /* ! _FENV_H_ */