172 lines
7.9 KiB
C
172 lines
7.9 KiB
C
/* Copyright (C) 2004-2016 Free Software Foundation, Inc.
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Contributed by Apple, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/*
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* ISO C Standard: 7.22 Type-generic math <tgmath.h>
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*/
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#ifndef _TGMATH_H
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#define _TGMATH_H
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#include <math.h>
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#ifndef __cplusplus
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#include <complex.h>
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/* Naming convention: generic macros are defining using
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__TGMATH_CPLX*, __TGMATH_REAL*, and __TGMATH_CPLX_ONLY. _CPLX
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means the generic argument(s) may be real or complex, _REAL means
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real only, _CPLX means complex only. If there is no suffix, we are
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defining a function of one generic argument. If the suffix is _n
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it is a function of n generic arguments. If the suffix is _m_n it
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is a function of n arguments, the first m of which are generic. We
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only define these macros for values of n and/or m that are needed. */
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/* The general rules for generic macros are given in 7.22 paragraphs 1 and 2.
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If any generic parameter is complex, we use a complex version. Otherwise
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we use a real version. If the real part of any generic parameter is long
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double, we use the long double version. Otherwise if the real part of any
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generic parameter is double or of integer type, we use the double version.
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Otherwise we use the float version. */
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#define __tg_cplx(expr) \
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__builtin_classify_type(expr) == 9
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#define __tg_ldbl(expr) \
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__builtin_types_compatible_p(__typeof__(expr), long double)
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#define __tg_dbl(expr) \
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(__builtin_types_compatible_p(__typeof__(expr), double) \
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|| __builtin_classify_type(expr) == 1)
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#define __tg_choose(x,f,d,l) \
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__builtin_choose_expr(__tg_ldbl(x), l, \
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__builtin_choose_expr(__tg_dbl(x), d, \
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f))
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#define __tg_choose_2(x,y,f,d,l) \
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__builtin_choose_expr(__tg_ldbl(x) || __tg_ldbl(y), l, \
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__builtin_choose_expr(__tg_dbl(x) || __tg_dbl(y), d, \
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f))
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#define __tg_choose_3(x,y,z,f,d,l) \
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__builtin_choose_expr(__tg_ldbl(x) || __tg_ldbl(y) || __tg_ldbl(z), l, \
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__builtin_choose_expr(__tg_dbl(x) || __tg_dbl(y) \
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|| __tg_dbl(z), d, \
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f))
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#define __TGMATH_CPLX(z,R,C) \
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__builtin_choose_expr (__tg_cplx(z), \
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__tg_choose (__real__(z), C##f(z), (C)(z), C##l(z)), \
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__tg_choose (z, R##f(z), (R)(z), R##l(z)))
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#define __TGMATH_CPLX_2(z1,z2,R,C) \
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__builtin_choose_expr (__tg_cplx(z1) || __tg_cplx(z2), \
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__tg_choose_2 (__real__(z1), __real__(z2), \
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C##f(z1,z2), (C)(z1,z2), C##l(z1,z2)), \
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__tg_choose_2 (z1, z2, \
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R##f(z1,z2), (R)(z1,z2), R##l(z1,z2)))
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#define __TGMATH_REAL(x,R) \
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__tg_choose (x, R##f(x), (R)(x), R##l(x))
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#define __TGMATH_REAL_2(x,y,R) \
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__tg_choose_2 (x, y, R##f(x,y), (R)(x,y), R##l(x,y))
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#define __TGMATH_REAL_3(x,y,z,R) \
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__tg_choose_3 (x, y, z, R##f(x,y,z), (R)(x,y,z), R##l(x,y,z))
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#define __TGMATH_REAL_1_2(x,y,R) \
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__tg_choose (x, R##f(x,y), (R)(x,y), R##l(x,y))
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#define __TGMATH_REAL_2_3(x,y,z,R) \
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__tg_choose_2 (x, y, R##f(x,y,z), (R)(x,y,z), R##l(x,y,z))
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#define __TGMATH_CPLX_ONLY(z,C) \
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__tg_choose (__real__(z), C##f(z), (C)(z), C##l(z))
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/* Functions defined in both <math.h> and <complex.h> (7.22p4) */
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#define acos(z) __TGMATH_CPLX(z, acos, cacos)
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#define asin(z) __TGMATH_CPLX(z, asin, casin)
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#define atan(z) __TGMATH_CPLX(z, atan, catan)
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#define acosh(z) __TGMATH_CPLX(z, acosh, cacosh)
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#define asinh(z) __TGMATH_CPLX(z, asinh, casinh)
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#define atanh(z) __TGMATH_CPLX(z, atanh, catanh)
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#define cos(z) __TGMATH_CPLX(z, cos, ccos)
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#define sin(z) __TGMATH_CPLX(z, sin, csin)
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#define tan(z) __TGMATH_CPLX(z, tan, ctan)
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#define cosh(z) __TGMATH_CPLX(z, cosh, ccosh)
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#define sinh(z) __TGMATH_CPLX(z, sinh, csinh)
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#define tanh(z) __TGMATH_CPLX(z, tanh, ctanh)
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#define exp(z) __TGMATH_CPLX(z, exp, cexp)
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#define log(z) __TGMATH_CPLX(z, log, clog)
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#define pow(z1,z2) __TGMATH_CPLX_2(z1, z2, pow, cpow)
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#define sqrt(z) __TGMATH_CPLX(z, sqrt, csqrt)
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#define fabs(z) __TGMATH_CPLX(z, fabs, cabs)
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/* Functions defined in <math.h> only (7.22p5) */
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#define atan2(x,y) __TGMATH_REAL_2(x, y, atan2)
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#define cbrt(x) __TGMATH_REAL(x, cbrt)
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#define ceil(x) __TGMATH_REAL(x, ceil)
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#define copysign(x,y) __TGMATH_REAL_2(x, y, copysign)
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#define erf(x) __TGMATH_REAL(x, erf)
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#define erfc(x) __TGMATH_REAL(x, erfc)
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#define exp2(x) __TGMATH_REAL(x, exp2)
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#define expm1(x) __TGMATH_REAL(x, expm1)
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#define fdim(x,y) __TGMATH_REAL_2(x, y, fdim)
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#define floor(x) __TGMATH_REAL(x, floor)
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#define fma(x,y,z) __TGMATH_REAL_3(x, y, z, fma)
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#define fmax(x,y) __TGMATH_REAL_2(x, y, fmax)
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#define fmin(x,y) __TGMATH_REAL_2(x, y, fmin)
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#define fmod(x,y) __TGMATH_REAL_2(x, y, fmod)
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#define frexp(x,y) __TGMATH_REAL_1_2(x, y, frexp)
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#define hypot(x,y) __TGMATH_REAL_2(x, y, hypot)
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#define ilogb(x) __TGMATH_REAL(x, ilogb)
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#define ldexp(x,y) __TGMATH_REAL_1_2(x, y, ldexp)
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#define lgamma(x) __TGMATH_REAL(x, lgamma)
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#define llrint(x) __TGMATH_REAL(x, llrint)
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#define llround(x) __TGMATH_REAL(x, llround)
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#define log10(x) __TGMATH_REAL(x, log10)
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#define log1p(x) __TGMATH_REAL(x, log1p)
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#define log2(x) __TGMATH_REAL(x, log2)
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#define logb(x) __TGMATH_REAL(x, logb)
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#define lrint(x) __TGMATH_REAL(x, lrint)
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#define lround(x) __TGMATH_REAL(x, lround)
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#define nearbyint(x) __TGMATH_REAL(x, nearbyint)
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#define nextafter(x,y) __TGMATH_REAL_2(x, y, nextafter)
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#define nexttoward(x,y) __TGMATH_REAL_1_2(x, y, nexttoward)
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#define remainder(x,y) __TGMATH_REAL_2(x, y, remainder)
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#define remquo(x,y,z) __TGMATH_REAL_2_3(x, y, z, remquo)
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#define rint(x) __TGMATH_REAL(x, rint)
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#define round(x) __TGMATH_REAL(x, round)
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#define scalbn(x,y) __TGMATH_REAL_1_2(x, y, scalbn)
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#define scalbln(x,y) __TGMATH_REAL_1_2(x, y, scalbln)
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#define tgamma(x) __TGMATH_REAL(x, tgamma)
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#define trunc(x) __TGMATH_REAL(x, trunc)
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/* Functions defined in <complex.h> only (7.22p6) */
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#define carg(z) __TGMATH_CPLX_ONLY(z, carg)
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#define cimag(z) __TGMATH_CPLX_ONLY(z, cimag)
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#define conj(z) __TGMATH_CPLX_ONLY(z, conj)
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#define cproj(z) __TGMATH_CPLX_ONLY(z, cproj)
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#define creal(z) __TGMATH_CPLX_ONLY(z, creal)
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#endif /* __cplusplus */
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#endif /* _TGMATH_H */
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