fenv.h revision 1.19
1/* $NetBSD: fenv.h,v 1.19 2015/12/27 19:50:31 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__) 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