1/* $OpenBSD: tgmath.h,v 1.1 2011/07/08 19:28:06 martynas Exp $ */ 2 3/*- 4 * Copyright (c) 2004 Stefan Farfeleder. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD: src/include/tgmath.h,v 1.5 2007/02/02 18:30:23 schweikh Exp $ 29 */ 30 31#ifndef _TGMATH_H_ 32#define _TGMATH_H_ 33 34#include <complex.h> 35#include <math.h> 36 37/* 38 * This implementation of <tgmath.h> requires two implementation-dependent 39 * macros to be defined: 40 * __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) 41 * Invokes fnl() if the corresponding real type of x, y or z is long 42 * double, fn() if it is double or any has an integer type, and fnf() 43 * otherwise. 44 * __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) 45 * Invokes [c]fnl() if the corresponding real type of x, y or z is long 46 * double, [c]fn() if it is double or any has an integer type, and 47 * [c]fnf() otherwise. The function with the 'c' prefix is called if 48 * any of x, y or z is a complex number. 49 * Both macros call the chosen function with all additional arguments passed 50 * to them, as given by __VA_ARGS__. 51 * 52 * Note that these macros cannot be implemented with C's ?: operator, 53 * because the return type of the whole expression would incorrectly be long 54 * double complex regardless of the argument types. 55 */ 56 57#if __GNUC_PREREQ__(3, 1) 58#define __tg_type(e, t) __builtin_types_compatible_p(__typeof__(e), t) 59#define __tg_type3(e1, e2, e3, t) \ 60 (__tg_type(e1, t) || __tg_type(e2, t) || __tg_type(e3, t)) 61#define __tg_type_corr(e1, e2, e3, t) \ 62 (__tg_type3(e1, e2, e3, t) || __tg_type3(e1, e2, e3, t _Complex)) 63#define __tg_integer(e1, e2, e3) \ 64 (((__typeof__(e1))1.5 == 1) || ((__typeof__(e2))1.5 == 1) || \ 65 ((__typeof__(e3))1.5 == 1)) 66#define __tg_is_complex(e1, e2, e3) \ 67 (__tg_type3(e1, e2, e3, float _Complex) || \ 68 __tg_type3(e1, e2, e3, double _Complex) || \ 69 __tg_type3(e1, e2, e3, long double _Complex) || \ 70 __tg_type3(e1, e2, e3, __typeof__(_Complex_I))) 71 72#define __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) \ 73 __builtin_choose_expr(__tg_type_corr(x, y, z, long double), \ 74 fnl(__VA_ARGS__), __builtin_choose_expr( \ 75 __tg_type_corr(x, y, z, double) || __tg_integer(x, y, z),\ 76 fn(__VA_ARGS__), fnf(__VA_ARGS__))) 77 78#define __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) \ 79 __builtin_choose_expr(__tg_is_complex(x, y, z), \ 80 __tg_impl_simple(x, y, z, cfn, cfnf, cfnl, __VA_ARGS__), \ 81 __tg_impl_simple(x, y, z, fn, fnf, fnl, __VA_ARGS__)) 82 83#else /* __GNUC__ */ 84#error "<tgmath.h> not implemented for this compiler" 85#endif /* !__GNUC__ */ 86 87/* Macros to save lots of repetition below */ 88#define __tg_simple(x, fn) \ 89 __tg_impl_simple(x, x, x, fn, fn##f, fn##l, x) 90#define __tg_simple2(x, y, fn) \ 91 __tg_impl_simple(x, x, y, fn, fn##f, fn##l, x, y) 92#define __tg_simplev(x, fn, ...) \ 93 __tg_impl_simple(x, x, x, fn, fn##f, fn##l, __VA_ARGS__) 94#define __tg_full(x, fn) \ 95 __tg_impl_full(x, x, x, fn, fn##f, fn##l, c##fn, c##fn##f, c##fn##l, x) 96 97/* 7.22#4 -- These macros expand to real or complex functions, depending on 98 * the type of their arguments. */ 99#define acos(x) __tg_full(x, acos) 100#define asin(x) __tg_full(x, asin) 101#define atan(x) __tg_full(x, atan) 102#define acosh(x) __tg_full(x, acosh) 103#define asinh(x) __tg_full(x, asinh) 104#define atanh(x) __tg_full(x, atanh) 105#define cos(x) __tg_full(x, cos) 106#define sin(x) __tg_full(x, sin) 107#define tan(x) __tg_full(x, tan) 108#define cosh(x) __tg_full(x, cosh) 109#define sinh(x) __tg_full(x, sinh) 110#define tanh(x) __tg_full(x, tanh) 111#define exp(x) __tg_full(x, exp) 112#define log(x) __tg_full(x, log) 113#define pow(x, y) __tg_impl_full(x, x, y, pow, powf, powl, \ 114 cpow, cpowf, cpowl, x, y) 115#define sqrt(x) __tg_full(x, sqrt) 116 117/* "The corresponding type-generic macro for fabs and cabs is fabs." */ 118#define fabs(x) __tg_impl_full(x, x, x, fabs, fabsf, fabsl, \ 119 cabs, cabsf, cabsl, x) 120 121/* 7.22#5 -- These macros are only defined for arguments with real type. */ 122#define atan2(x, y) __tg_simple2(x, y, atan2) 123#define cbrt(x) __tg_simple(x, cbrt) 124#define ceil(x) __tg_simple(x, ceil) 125#define copysign(x, y) __tg_simple2(x, y, copysign) 126#define erf(x) __tg_simple(x, erf) 127#define erfc(x) __tg_simple(x, erfc) 128#define exp2(x) __tg_simple(x, exp2) 129#define expm1(x) __tg_simple(x, expm1) 130#define fdim(x, y) __tg_simple2(x, y, fdim) 131#define floor(x) __tg_simple(x, floor) 132#define fma(x, y, z) __tg_impl_simple(x, y, z, fma, fmaf, fmal, x, y, z) 133#define fmax(x, y) __tg_simple2(x, y, fmax) 134#define fmin(x, y) __tg_simple2(x, y, fmin) 135#define fmod(x, y) __tg_simple2(x, y, fmod) 136#define frexp(x, y) __tg_simplev(x, frexp, x, y) 137#define hypot(x, y) __tg_simple2(x, y, hypot) 138#define ilogb(x) __tg_simple(x, ilogb) 139#define ldexp(x, y) __tg_simplev(x, ldexp, x, y) 140#define lgamma(x) __tg_simple(x, lgamma) 141#define llrint(x) __tg_simple(x, llrint) 142#define llround(x) __tg_simple(x, llround) 143#define log10(x) __tg_simple(x, log10) 144#define log1p(x) __tg_simple(x, log1p) 145#define log2(x) __tg_simple(x, log2) 146#define logb(x) __tg_simple(x, logb) 147#define lrint(x) __tg_simple(x, lrint) 148#define lround(x) __tg_simple(x, lround) 149#define nearbyint(x) __tg_simple(x, nearbyint) 150#define nextafter(x, y) __tg_simple2(x, y, nextafter) 151#define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y) 152#define remainder(x, y) __tg_simple2(x, y, remainder) 153#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquo, remquof, \ 154 remquol, x, y, z) 155#define rint(x) __tg_simple(x, rint) 156#define round(x) __tg_simple(x, round) 157#define scalbn(x, y) __tg_simplev(x, scalbn, x, y) 158#define scalbln(x, y) __tg_simplev(x, scalbln, x, y) 159#define tgamma(x) __tg_simple(x, tgamma) 160#define trunc(x) __tg_simple(x, trunc) 161 162/* 7.22#6 -- These macros always expand to complex functions. */ 163#define carg(x) __tg_simple(x, carg) 164#define cimag(x) __tg_simple(x, cimag) 165#define conj(x) __tg_simple(x, conj) 166#define cproj(x) __tg_simple(x, cproj) 167#define creal(x) __tg_simple(x, creal) 168 169#endif /* !_TGMATH_H_ */ 170