| 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_ */ |