1/* Copyright (C) 2004, 2005, 2009 Free Software Foundation, Inc. 2 Contributed by Apple, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 3, or (at your option) 9any later version. 10 11GCC is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16Under Section 7 of GPL version 3, you are granted additional 17permissions described in the GCC Runtime Library Exception, version 183.1, as published by the Free Software Foundation. 19 20You should have received a copy of the GNU General Public License and 21a copy of the GCC Runtime Library Exception along with this program; 22see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23<http://www.gnu.org/licenses/>. */ 24 25/* 26 * ISO C Standard: 7.22 Type-generic math <tgmath.h> 27 */ 28 29#ifndef _TGMATH_H 30#define _TGMATH_H 31 32#include <math.h> 33 34#ifndef __cplusplus 35#include <complex.h> 36 37/* Naming convention: generic macros are defining using 38 __TGMATH_CPLX*, __TGMATH_REAL*, and __TGMATH_CPLX_ONLY. _CPLX 39 means the generic argument(s) may be real or complex, _REAL means 40 real only, _CPLX means complex only. If there is no suffix, we are 41 defining a function of one generic argument. If the suffix is _n 42 it is a function of n generic arguments. If the suffix is _m_n it 43 is a function of n arguments, the first m of which are generic. We 44 only define these macros for values of n and/or m that are needed. */ 45 46/* The general rules for generic macros are given in 7.22 paragraphs 1 and 2. 47 If any generic parameter is complex, we use a complex version. Otherwise 48 we use a real version. If the real part of any generic parameter is long 49 double, we use the long double version. Otherwise if the real part of any 50 generic parameter is double or of integer type, we use the double version. 51 Otherwise we use the float version. */ 52 53#define __tg_cplx(expr) \ 54 __builtin_classify_type(expr) == 9 55 56#define __tg_ldbl(expr) \ 57 __builtin_types_compatible_p(__typeof__(expr), long double) 58 59#define __tg_dbl(expr) \ 60 (__builtin_types_compatible_p(__typeof__(expr), double) \ 61 || __builtin_classify_type(expr) == 1) 62 63#define __tg_choose(x,f,d,l) \ 64 __builtin_choose_expr(__tg_ldbl(x), l, \ 65 __builtin_choose_expr(__tg_dbl(x), d, \ 66 f)) 67 68#define __tg_choose_2(x,y,f,d,l) \ 69 __builtin_choose_expr(__tg_ldbl(x) || __tg_ldbl(y), l, \ 70 __builtin_choose_expr(__tg_dbl(x) || __tg_dbl(y), d, \ 71 f)) 72 73#define __tg_choose_3(x,y,z,f,d,l) \ 74 __builtin_choose_expr(__tg_ldbl(x) || __tg_ldbl(y) || __tg_ldbl(z), l, \ 75 __builtin_choose_expr(__tg_dbl(x) || __tg_dbl(y) \ 76 || __tg_dbl(z), d, \ 77 f)) 78 79#define __TGMATH_CPLX(z,R,C) \ 80 __builtin_choose_expr (__tg_cplx(z), \ 81 __tg_choose (__real__(z), C##f(z), (C)(z), C##l(z)), \ 82 __tg_choose (z, R##f(z), (R)(z), R##l(z))) 83 84#define __TGMATH_CPLX_2(z1,z2,R,C) \ 85 __builtin_choose_expr (__tg_cplx(z1) || __tg_cplx(z2), \ 86 __tg_choose_2 (__real__(z1), __real__(z2), \ 87 C##f(z1,z2), (C)(z1,z2), C##l(z1,z2)), \ 88 __tg_choose_2 (z1, z2, \ 89 R##f(z1,z2), (R)(z1,z2), R##l(z1,z2))) 90 91#define __TGMATH_REAL(x,R) \ 92 __tg_choose (x, R##f(x), (R)(x), R##l(x)) 93#define __TGMATH_REAL_2(x,y,R) \ 94 __tg_choose_2 (x, y, R##f(x,y), (R)(x,y), R##l(x,y)) 95#define __TGMATH_REAL_3(x,y,z,R) \ 96 __tg_choose_3 (x, y, z, R##f(x,y,z), (R)(x,y,z), R##l(x,y,z)) 97#define __TGMATH_REAL_1_2(x,y,R) \ 98 __tg_choose (x, R##f(x,y), (R)(x,y), R##l(x,y)) 99#define __TGMATH_REAL_2_3(x,y,z,R) \ 100 __tg_choose_2 (x, y, R##f(x,y,z), (R)(x,y,z), R##l(x,y,z)) 101#define __TGMATH_CPLX_ONLY(z,C) \ 102 __tg_choose (__real__(z), C##f(z), (C)(z), C##l(z)) 103 104/* Functions defined in both <math.h> and <complex.h> (7.22p4) */ 105#define acos(z) __TGMATH_CPLX(z, acos, cacos) 106#define asin(z) __TGMATH_CPLX(z, asin, casin) 107#define atan(z) __TGMATH_CPLX(z, atan, catan) 108#define acosh(z) __TGMATH_CPLX(z, acosh, cacosh) 109#define asinh(z) __TGMATH_CPLX(z, asinh, casinh) 110#define atanh(z) __TGMATH_CPLX(z, atanh, catanh) 111#define cos(z) __TGMATH_CPLX(z, cos, ccos) 112#define sin(z) __TGMATH_CPLX(z, sin, csin) 113#define tan(z) __TGMATH_CPLX(z, tan, ctan) 114#define cosh(z) __TGMATH_CPLX(z, cosh, ccosh) 115#define sinh(z) __TGMATH_CPLX(z, sinh, csinh) 116#define tanh(z) __TGMATH_CPLX(z, tanh, ctanh) 117#define exp(z) __TGMATH_CPLX(z, exp, cexp) 118#define log(z) __TGMATH_CPLX(z, log, clog) 119#define pow(z1,z2) __TGMATH_CPLX_2(z1, z2, pow, cpow) 120#define sqrt(z) __TGMATH_CPLX(z, sqrt, csqrt) 121#define fabs(z) __TGMATH_CPLX(z, fabs, cabs) 122 123/* Functions defined in <math.h> only (7.22p5) */ 124#define atan2(x,y) __TGMATH_REAL_2(x, y, atan2) 125#define cbrt(x) __TGMATH_REAL(x, cbrt) 126#define ceil(x) __TGMATH_REAL(x, ceil) 127#define copysign(x,y) __TGMATH_REAL_2(x, y, copysign) 128#define erf(x) __TGMATH_REAL(x, erf) 129#define erfc(x) __TGMATH_REAL(x, erfc) 130#define exp2(x) __TGMATH_REAL(x, exp2) 131#define expm1(x) __TGMATH_REAL(x, expm1) 132#define fdim(x,y) __TGMATH_REAL_2(x, y, fdim) 133#define floor(x) __TGMATH_REAL(x, floor) 134#define fma(x,y,z) __TGMATH_REAL_3(x, y, z, fma) 135#define fmax(x,y) __TGMATH_REAL_2(x, y, fmax) 136#define fmin(x,y) __TGMATH_REAL_2(x, y, fmin) 137#define fmod(x,y) __TGMATH_REAL_2(x, y, fmod) 138#define frexp(x,y) __TGMATH_REAL_1_2(x, y, frexp) 139#define hypot(x,y) __TGMATH_REAL_2(x, y, hypot) 140#define ilogb(x) __TGMATH_REAL(x, ilogb) 141#define ldexp(x,y) __TGMATH_REAL_1_2(x, y, ldexp) 142#define lgamma(x) __TGMATH_REAL(x, lgamma) 143#define llrint(x) __TGMATH_REAL(x, llrint) 144#define llround(x) __TGMATH_REAL(x, llround) 145#define log10(x) __TGMATH_REAL(x, log10) 146#define log1p(x) __TGMATH_REAL(x, log1p) 147#define log2(x) __TGMATH_REAL(x, log2) 148#define logb(x) __TGMATH_REAL(x, logb) 149#define lrint(x) __TGMATH_REAL(x, lrint) 150#define lround(x) __TGMATH_REAL(x, lround) 151#define nearbyint(x) __TGMATH_REAL(x, nearbyint) 152#define nextafter(x,y) __TGMATH_REAL_2(x, y, nextafter) 153#define nexttoward(x,y) __TGMATH_REAL_1_2(x, y, nexttoward) 154#define remainder(x,y) __TGMATH_REAL_2(x, y, remainder) 155#define remquo(x,y,z) __TGMATH_REAL_2_3(x, y, z, remquo) 156#define rint(x) __TGMATH_REAL(x, rint) 157#define round(x) __TGMATH_REAL(x, round) 158#define scalbn(x,y) __TGMATH_REAL_1_2(x, y, scalbn) 159#define scalbln(x,y) __TGMATH_REAL_1_2(x, y, scalbln) 160#define tgamma(x) __TGMATH_REAL(x, tgamma) 161#define trunc(x) __TGMATH_REAL(x, trunc) 162 163/* Functions defined in <complex.h> only (7.22p6) */ 164#define carg(z) __TGMATH_CPLX_ONLY(z, carg) 165#define cimag(z) __TGMATH_CPLX_ONLY(z, cimag) 166#define conj(z) __TGMATH_CPLX_ONLY(z, conj) 167#define cproj(z) __TGMATH_CPLX_ONLY(z, cproj) 168#define creal(z) __TGMATH_CPLX_ONLY(z, creal) 169 170#endif /* __cplusplus */ 171#endif /* _TGMATH_H */ 172