1 /* $OpenBSD: fenv.h,v 1.2 2011/05/25 21:46:49 martynas Exp $ */ 2 /* $NetBSD: fenv.h,v 1.2.4.1 2011/02/08 16:18:55 bouyer Exp $ */ 3 4 /* 5 * Copyright (c) 2010 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #pragma once 31 32 #include <sys/cdefs.h> 33 34 #if defined(__aarch64__) || defined(__arm__) 35 #include <bits/fenv_arm.h> 36 #elif defined(__i386__) 37 #include <bits/fenv_x86.h> 38 #elif defined(__x86_64__) 39 #include <bits/fenv_x86_64.h> 40 #endif 41 42 __BEGIN_DECLS 43 44 // fenv was always available on x86. 45 #if __ANDROID_API__ >= 21 || defined(__i386__) 46 int feclearexcept(int __exceptions) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 47 int fegetexceptflag(fexcept_t* __flag_ptr, int __exceptions) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 48 int feraiseexcept(int __exceptions) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 49 int fesetexceptflag(const fexcept_t* __flag_ptr, int __exceptions) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 50 int fetestexcept(int __exceptions) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 51 52 int fegetround(void) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 53 int fesetround(int __rounding_mode) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 54 55 int fegetenv(fenv_t* __env) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 56 int feholdexcept(fenv_t* __env) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 57 int fesetenv(const fenv_t* __env) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 58 int feupdateenv(const fenv_t* __env) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 59 60 int feenableexcept(int __exceptions) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 61 int fedisableexcept(int __exceptions) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 62 int fegetexcept(void) __INTRODUCED_IN_ARM(21) __INTRODUCED_IN_X86(9); 63 #else 64 /* Defined as inlines for pre-21 ARM. */ 65 #endif 66 67 /* 68 * The following constant represents the default floating-point environment 69 * (that is, the one installed at program startup) and has type pointer to 70 * const-qualified fenv_t. 71 * 72 * It can be used as an argument to the functions that manage the floating-point 73 * environment, namely fesetenv() and feupdateenv(). 74 */ 75 extern const fenv_t __fe_dfl_env; 76 #define FE_DFL_ENV (&__fe_dfl_env) 77 78 __END_DECLS 79 80 #if defined(__arm__) 81 #include <android/legacy_fenv_inlines_arm.h> 82 #endif 83