tgmath.h revision 229704
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 229704 2012-01-06 16:20:17Z 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 58#ifndef __generic 59#error "<tgmath.h> not implemented for this compiler" 60#endif 61 62#if 0 /* XXX: Much shorter and faster to compile, but broken with GCC 4.2. */ 63#define __tg_generic(x, cfnl, cfn, cfnf, fnl, fn, fnf) \ 64 __generic(x, long double _Complex, cfnl, \ 65 __generic(x, double _Complex, cfn, \ 66 __generic(x, float _Complex, cfnf, \ 67 __generic(x, long double, fnl, \ 68 __generic(x, float, fnf, fn))))) 69#define __tg_type(x) \ 70 __tg_generic(x, (long double _Complex)0, (double _Complex)0, \ 71 (float _Complex)0, (long double)0, (double)0, (float)0) 72#define __tg_impl_simple(x, y, z, fnl, fn, fnf, ...) \ 73 __tg_generic( \ 74 __tg_type(x) + __tg_type(y) + __tg_type(z), \ 75 fnl, fn, fnf, fnl, fn, fnf)(__VA_ARGS__) 76#define __tg_impl_full(x, y, cfnl, cfn, cfnf, fnl, fn, fnf, ...) \ 77 __tg_generic( \ 78 __tg_type(x) + __tg_type(y), \ 79 cfnl, cfn, cfnf, fnl, fn, fnf)(__VA_ARGS__) 80#else 81#define __tg_generic_simple(x, fnl, fn, fnf) \ 82 __generic(x, long double _Complex, fnl, \ 83 __generic(x, double _Complex, fn, \ 84 __generic(x, float _Complex, fnf, \ 85 __generic(x, long double, fnl, \ 86 __generic(x, float, fnf, fn))))) 87#define __tg_impl_simple(x, y, z, fnl, fn, fnf, ...) \ 88 __tg_generic_simple(x, \ 89 __tg_generic_simple(y, \ 90 __tg_generic_simple(z, fnl, fnl, fnl), \ 91 __tg_generic_simple(z, fnl, fnl, fnl), \ 92 __tg_generic_simple(z, fnl, fnl, fnl)), \ 93 __tg_generic_simple(y, \ 94 __tg_generic_simple(z, fnl, fnl, fnl), \ 95 __tg_generic_simple(z, fnl, fn , fn ), \ 96 __tg_generic_simple(z, fnl, fn , fn )), \ 97 __tg_generic_simple(y, \ 98 __tg_generic_simple(z, fnl, fnl, fnl), \ 99 __tg_generic_simple(z, fnl, fn , fn ), \ 100 __tg_generic_simple(z, fnl, fn , fnf)))(__VA_ARGS__) 101#define __tg_generic_full(x, cfnl, cfn, cfnf, fnl, fn, fnf) \ 102 __generic(x, long double _Complex, cfnl, \ 103 __generic(x, double _Complex, cfn, \ 104 __generic(x, float _Complex, cfnf, \ 105 __generic(x, long double, fnl, \ 106 __generic(x, float, fnf, fn))))) 107#define __tg_impl_full(x, y, cfnl, cfn, cfnf, fnl, fn, fnf, ...) \ 108 __tg_generic_full(x, \ 109 __tg_generic_full(y, cfnl, cfnl, cfnl, cfnl, cfnl, cfnl), \ 110 __tg_generic_full(y, cfnl, cfn , cfn , cfnl, cfn , cfn ), \ 111 __tg_generic_full(y, cfnl, cfn , cfnf, cfnl, cfn , cfnf), \ 112 __tg_generic_full(y, cfnl, cfnl, cfnl, fnl , fnl , fnl ), \ 113 __tg_generic_full(y, cfnl, cfn , cfn , fnl , fn , fn ), \ 114 __tg_generic_full(y, cfnl, cfn , cfnf, fnl , fn , fnf )) \ 115 (__VA_ARGS__) 116#endif 117 118/* Macros to save lots of repetition below */ 119#define __tg_simple(x, fn) \ 120 __tg_impl_simple(x, x, x, fn##l, fn, fn##f, x) 121#define __tg_simple2(x, y, fn) \ 122 __tg_impl_simple(x, x, y, fn##l, fn, fn##f, x, y) 123#define __tg_simple3(x, y, z, fn) \ 124 __tg_impl_simple(x, y, z, fn##l, fn, fn##f, x, y, z) 125#define __tg_simplev(x, fn, ...) \ 126 __tg_impl_simple(x, x, x, fn##l, fn, fn##f, __VA_ARGS__) 127#define __tg_full(x, fn) \ 128 __tg_impl_full(x, x, c##fn##l, c##fn, c##fn##f, fn##l, fn, fn##f, x) 129#define __tg_full2(x, y, fn) \ 130 __tg_impl_full(x, y, c##fn##l, c##fn, c##fn##f, fn##l, fn, fn##f, x, y) 131 132/* 7.22#4 -- These macros expand to real or complex functions, depending on 133 * the type of their arguments. */ 134#define acos(x) __tg_full(x, acos) 135#define asin(x) __tg_full(x, asin) 136#define atan(x) __tg_full(x, atan) 137#define acosh(x) __tg_full(x, acosh) 138#define asinh(x) __tg_full(x, asinh) 139#define atanh(x) __tg_full(x, atanh) 140#define cos(x) __tg_full(x, cos) 141#define sin(x) __tg_full(x, sin) 142#define tan(x) __tg_full(x, tan) 143#define cosh(x) __tg_full(x, cosh) 144#define sinh(x) __tg_full(x, sinh) 145#define tanh(x) __tg_full(x, tanh) 146#define exp(x) __tg_full(x, exp) 147#define log(x) __tg_full(x, log) 148#define pow(x, y) __tg_full2(x, y, pow) 149#define sqrt(x) __tg_full(x, sqrt) 150 151/* "The corresponding type-generic macro for fabs and cabs is fabs." */ 152#define fabs(x) __tg_impl_full(x, x, cabsl, cabs, cabsf, \ 153 fabsl, fabs, fabsf, x) 154 155/* 7.22#5 -- These macros are only defined for arguments with real type. */ 156#define atan2(x, y) __tg_simple2(x, y, atan2) 157#define cbrt(x) __tg_simple(x, cbrt) 158#define ceil(x) __tg_simple(x, ceil) 159#define copysign(x, y) __tg_simple2(x, y, copysign) 160#define erf(x) __tg_simple(x, erf) 161#define erfc(x) __tg_simple(x, erfc) 162#define exp2(x) __tg_simple(x, exp2) 163#define expm1(x) __tg_simple(x, expm1) 164#define fdim(x, y) __tg_simple2(x, y, fdim) 165#define floor(x) __tg_simple(x, floor) 166#define fma(x, y, z) __tg_simple3(x, y, z, fma) 167#define fmax(x, y) __tg_simple2(x, y, fmax) 168#define fmin(x, y) __tg_simple2(x, y, fmin) 169#define fmod(x, y) __tg_simple2(x, y, fmod) 170#define frexp(x, y) __tg_simplev(x, frexp, x, y) 171#define hypot(x, y) __tg_simple2(x, y, hypot) 172#define ilogb(x) __tg_simple(x, ilogb) 173#define ldexp(x, y) __tg_simplev(x, ldexp, x, y) 174#define lgamma(x) __tg_simple(x, lgamma) 175#define llrint(x) __tg_simple(x, llrint) 176#define llround(x) __tg_simple(x, llround) 177#define log10(x) __tg_simple(x, log10) 178#define log1p(x) __tg_simple(x, log1p) 179#define log2(x) __tg_simple(x, log2) 180#define logb(x) __tg_simple(x, logb) 181#define lrint(x) __tg_simple(x, lrint) 182#define lround(x) __tg_simple(x, lround) 183#define nearbyint(x) __tg_simple(x, nearbyint) 184#define nextafter(x, y) __tg_simple2(x, y, nextafter) 185#define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y) 186#define remainder(x, y) __tg_simple2(x, y, remainder) 187#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquol, remquo, \ 188 remquof, x, y, z) 189#define rint(x) __tg_simple(x, rint) 190#define round(x) __tg_simple(x, round) 191#define scalbn(x, y) __tg_simplev(x, scalbn, x, y) 192#define scalbln(x, y) __tg_simplev(x, scalbln, x, y) 193#define tgamma(x) __tg_simple(x, tgamma) 194#define trunc(x) __tg_simple(x, trunc) 195 196/* 7.22#6 -- These macros always expand to complex functions. */ 197#define carg(x) __tg_simple(x, carg) 198#define cimag(x) __tg_simple(x, cimag) 199#define conj(x) __tg_simple(x, conj) 200#define cproj(x) __tg_simple(x, cproj) 201#define creal(x) __tg_simple(x, creal) 202 203#endif /* !_TGMATH_H_ */ 204