1 /* $NetBSD: fenv.h,v 1.26 2017/04/09 15:29:07 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(__vax__) 33 # ifndef __TEST_FENV 34 # error "fenv.h is currently not supported for this architecture" 35 # endif 36 typedef int fexcept_t; 37 typedef int fenv_t; 38 #else 39 # define __HAVE_FENV 40 # include <machine/fenv.h> 41 #endif 42 43 #if \ 44 (defined(__arm__) && defined(__SOFTFP__)) || \ 45 (defined(__m68k__) && !defined(__HAVE_68881__)) || \ 46 defined(__mips_soft_float) || \ 47 (defined(__powerpc__) && defined(_SOFT_FLOAT)) || \ 48 (defined(__sh__) && !defined(__SH_FPU_ANY__)) || \ 49 0 50 51 /* 52 * Common definitions for softfloat. 53 */ 54 55 #ifndef __HAVE_FENV_SOFTFLOAT_DEFS 56 57 typedef int fexcept_t; 58 59 typedef struct { 60 int __flags; 61 int __mask; 62 int __round; 63 } fenv_t; 64 65 #define __FENV_GET_FLAGS(__envp) (__envp)->__flags 66 #define __FENV_GET_MASK(__envp) (__envp)->__mask 67 #define __FENV_GET_ROUND(__envp) (__envp)->__round 68 #define __FENV_SET_FLAGS(__envp, __val) \ 69 (__envp)->__flags = (__val) 70 #define __FENV_SET_MASK(__envp, __val) \ 71 (__envp)->__mask = (__val) 72 #define __FENV_SET_ROUND(__envp, __val) \ 73 (__envp)->__round = (__val) 74 75 #endif /* __FENV_GET_FLAGS */ 76 77 #endif /* softfloat */ 78 79 __BEGIN_DECLS 80 81 /* Function prototypes */ 82 int feclearexcept(int); 83 int fegetexceptflag(fexcept_t *, int); 84 int feraiseexcept(int); 85 int fesetexceptflag(const fexcept_t *, int); 86 int fetestexcept(int); 87 int fegetround(void); 88 int fesetround(int); 89 int fegetenv(fenv_t *); 90 int feholdexcept(fenv_t *); 91 int fesetenv(const fenv_t *); 92 int feupdateenv(const fenv_t *); 93 94 #if defined(_NETBSD_SOURCE) || defined(_GNU_SOURCE) 95 96 int feenableexcept(int); 97 int fedisableexcept(int); 98 int fegetexcept(void); 99 100 #endif /* _NETBSD_SOURCE || _GNU_SOURCE */ 101 102 __END_DECLS 103 104 #endif /* ! _FENV_H_ */ 105