tgmath.h revision 229575
1/*- 2 * Copyright (c) 2004 Stefan Farfeleder. 3 * All rights reserved. 4 * 5 * Copyright (c) 2012 Ed Schouten <ed@FreeBSD.org> 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: head/include/tgmath.h 229575 2012-01-05 10:46:22Z ed $ 30 */ 31 32#ifndef _TGMATH_H_ 33#define _TGMATH_H_ 34 35#include <complex.h> 36#include <math.h> 37 38/* 39 * This implementation of <tgmath.h> uses the two following macros, 40 * which are based on the macros described in C11 proposal N1404: 41 * __tg_impl_simple(x, y, z, fnl, fn, fnf, ...) 42 * Invokes fnl() if the corresponding real type of x, y or z is long 43 * double, fn() if it is double or any has an integer type, and fnf() 44 * otherwise. 45 * __tg_impl_full(x, y, cfnl, cfn, cfnf, fnl, fn, fnf, ...) 46 * Invokes [c]fnl() if the corresponding real type of x or y is long 47 * double, [c]fn() if it is double or any has an integer type, and 48 * [c]fnf() otherwise. The function with the 'c' prefix is called if 49 * any of x or y is a complex number. 50 * Both macros call the chosen function with all additional arguments passed 51 * to them, as given by __VA_ARGS__. 52 * 53 * Note that these macros cannot be implemented with C's ?: operator, 54 * because the return type of the whole expression would incorrectly be long 55 * double complex regardless of the argument types. 56 * 57 * The _Complex_I distinction should not be needed, but due to a bug in 58 * GCC 4.2, _Complex_I is not of type float _Complex. 59 */ 60 61#ifndef __generic 62#error "<tgmath.h> not implemented for this compiler" 63#endif 64 65#define __tg_generic_simple(x, fnl, fn, fnf) \ 66 __generic(x, long double _Complex, fnl, \ 67 __generic(x, double _Complex, fn, \ 68 __generic(x, float _Complex, fnf, \ 69 __generic(x, __typeof(_Complex_I), fnf, \ 70 __generic(x, long double, fnl, \ 71 __generic(x, float, fnf, fn)))))) 72#define __tg_impl_simple(x, y, z, fnl, fn, fnf, ...) \ 73 __tg_generic_simple(x, \ 74 __tg_generic_simple(y, \ 75 __tg_generic_simple(z, fnl, fnl, fnl), \ 76 __tg_generic_simple(z, fnl, fnl, fnl), \ 77 __tg_generic_simple(z, fnl, fnl, fnl)), \ 78 __tg_generic_simple(y, \ 79 __tg_generic_simple(z, fnl, fnl, fnl), \ 80 __tg_generic_simple(z, fnl, fn , fn ), \ 81 __tg_generic_simple(z, fnl, fn , fn )), \ 82 __tg_generic_simple(y, \ 83 __tg_generic_simple(z, fnl, fnl, fnl), \ 84 __tg_generic_simple(z, fnl, fn , fn ), \ 85 __tg_generic_simple(z, fnl, fn , fnf)))(__VA_ARGS__) 86#define __tg_generic_full(x, cfnl, cfn, cfnf, fnl, fn, fnf) \ 87 __generic(x, long double _Complex, cfnl, \ 88 __generic(x, double _Complex, cfn, \ 89 __generic(x, float _Complex, cfnf, \ 90 __generic(x, __typeof(_Complex_I), cfnf, \ 91 __generic(x, long double, fnl, \ 92 __generic(x, float, fnf, fn)))))) 93#define __tg_impl_full(x, y, cfnl, cfn, cfnf, fnl, fn, fnf, ...) \ 94 __tg_generic_full(x, \ 95 __tg_generic_full(y, cfnl, cfnl, cfnl, cfnl, cfnl, cfnl), \ 96 __tg_generic_full(y, cfnl, cfn , cfn , cfnl, cfn , cfn ), \ 97 __tg_generic_full(y, cfnl, cfn , cfnf, cfnl, cfn , cfnf), \ 98 __tg_generic_full(y, cfnl, cfnl, cfnl, fnl , fnl , fnl ), \ 99 __tg_generic_full(y, cfnl, cfn , cfn , fnl , fn , fn ), \ 100 __tg_generic_full(y, cfnl, cfn , cfnf, fnl , fn , fnf )) \ 101 (__VA_ARGS__) 102 103/* Macros to save lots of repetition below */ 104#define __tg_simple(x, fn) \ 105 __tg_impl_simple(x, x, x, fn##l, fn, fn##f, x) 106#define __tg_simple2(x, y, fn) \ 107 __tg_impl_simple(x, x, y, fn##l, fn, fn##f, x, y) 108#define __tg_simple3(x, y, z, fn) \ 109 __tg_impl_simple(x, y, z, fn##l, fn, fn##f, x, y, z) 110#define __tg_simplev(x, fn, ...) \ 111 __tg_impl_simple(x, x, x, fn##l, fn, fn##f, __VA_ARGS__) 112#define __tg_full(x, fn) \ 113 __tg_impl_full(x, x, c##fn##l, c##fn, c##fn##f, fn##l, fn, fn##f, x) 114#define __tg_full2(x, y, fn) \ 115 __tg_impl_full(x, y, c##fn##l, c##fn, c##fn##f, fn##l, fn, fn##f, x, y) 116 117/* 7.22#4 -- These macros expand to real or complex functions, depending on 118 * the type of their arguments. */ 119#define acos(x) __tg_full(x, acos) 120#define asin(x) __tg_full(x, asin) 121#define atan(x) __tg_full(x, atan) 122#define acosh(x) __tg_full(x, acosh) 123#define asinh(x) __tg_full(x, asinh) 124#define atanh(x) __tg_full(x, atanh) 125#define cos(x) __tg_full(x, cos) 126#define sin(x) __tg_full(x, sin) 127#define tan(x) __tg_full(x, tan) 128#define cosh(x) __tg_full(x, cosh) 129#define sinh(x) __tg_full(x, sinh) 130#define tanh(x) __tg_full(x, tanh) 131#define exp(x) __tg_full(x, exp) 132#define log(x) __tg_full(x, log) 133#define pow(x, y) __tg_full2(x, y, pow) 134#define sqrt(x) __tg_full(x, sqrt) 135 136/* "The corresponding type-generic macro for fabs and cabs is fabs." */ 137#define fabs(x) __tg_impl_full(x, x, cabsl, cabs, cabsf, \ 138 fabsl, fabs, fabsf, x) 139 140/* 7.22#5 -- These macros are only defined for arguments with real type. */ 141#define atan2(x, y) __tg_simple2(x, y, atan2) 142#define cbrt(x) __tg_simple(x, cbrt) 143#define ceil(x) __tg_simple(x, ceil) 144#define copysign(x, y) __tg_simple2(x, y, copysign) 145#define erf(x) __tg_simple(x, erf) 146#define erfc(x) __tg_simple(x, erfc) 147#define exp2(x) __tg_simple(x, exp2) 148#define expm1(x) __tg_simple(x, expm1) 149#define fdim(x, y) __tg_simple2(x, y, fdim) 150#define floor(x) __tg_simple(x, floor) 151#define fma(x, y, z) __tg_simple3(x, y, z, fma) 152#define fmax(x, y) __tg_simple2(x, y, fmax) 153#define fmin(x, y) __tg_simple2(x, y, fmin) 154#define fmod(x, y) __tg_simple2(x, y, fmod) 155#define frexp(x, y) __tg_simplev(x, frexp, x, y) 156#define hypot(x, y) __tg_simple2(x, y, hypot) 157#define ilogb(x) __tg_simple(x, ilogb) 158#define ldexp(x, y) __tg_simplev(x, ldexp, x, y) 159#define lgamma(x) __tg_simple(x, lgamma) 160#define llrint(x) __tg_simple(x, llrint) 161#define llround(x) __tg_simple(x, llround) 162#define log10(x) __tg_simple(x, log10) 163#define log1p(x) __tg_simple(x, log1p) 164#define log2(x) __tg_simple(x, log2) 165#define logb(x) __tg_simple(x, logb) 166#define lrint(x) __tg_simple(x, lrint) 167#define lround(x) __tg_simple(x, lround) 168#define nearbyint(x) __tg_simple(x, nearbyint) 169#define nextafter(x, y) __tg_simple2(x, y, nextafter) 170#define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y) 171#define remainder(x, y) __tg_simple2(x, y, remainder) 172#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquol, remquo, \ 173 remquof, x, y, z) 174#define rint(x) __tg_simple(x, rint) 175#define round(x) __tg_simple(x, round) 176#define scalbn(x, y) __tg_simplev(x, scalbn, x, y) 177#define scalbln(x, y) __tg_simplev(x, scalbln, x, y) 178#define tgamma(x) __tg_simple(x, tgamma) 179#define trunc(x) __tg_simple(x, trunc) 180 181/* 7.22#6 -- These macros always expand to complex functions. */ 182#define carg(x) __tg_simple(x, carg) 183#define cimag(x) __tg_simple(x, cimag) 184#define conj(x) __tg_simple(x, conj) 185#define cproj(x) __tg_simple(x, cproj) 186#define creal(x) __tg_simple(x, creal) 187 188#endif /* !_TGMATH_H_ */ 189