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Diffstat (limited to 'include/tgmath.h')
| -rw-r--r-- | include/tgmath.h | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/include/tgmath.h b/include/tgmath.h new file mode 100644 index 0000000..46fade4 --- /dev/null +++ b/include/tgmath.h @@ -0,0 +1,169 @@ +/* $OpenBSD: tgmath.h,v 1.1 2011/07/08 19:28:06 martynas Exp $ */ + +/*- + * Copyright (c) 2004 Stefan Farfeleder. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/include/tgmath.h,v 1.5 2007/02/02 18:30:23 schweikh Exp $ + */ + +#ifndef _TGMATH_H_ +#define _TGMATH_H_ + +#include <complex.h> +#include <math.h> + +/* + * This implementation of <tgmath.h> requires two implementation-dependent + * macros to be defined: + * __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) + * Invokes fnl() if the corresponding real type of x, y or z is long + * double, fn() if it is double or any has an integer type, and fnf() + * otherwise. + * __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) + * Invokes [c]fnl() if the corresponding real type of x, y or z is long + * double, [c]fn() if it is double or any has an integer type, and + * [c]fnf() otherwise. The function with the 'c' prefix is called if + * any of x, y or z is a complex number. + * Both macros call the chosen function with all additional arguments passed + * to them, as given by __VA_ARGS__. + * + * Note that these macros cannot be implemented with C's ?: operator, + * because the return type of the whole expression would incorrectly be long + * double complex regardless of the argument types. + */ + +#if __GNUC_PREREQ__(3, 1) +#define __tg_type(e, t) __builtin_types_compatible_p(__typeof__(e), t) +#define __tg_type3(e1, e2, e3, t) \ + (__tg_type(e1, t) || __tg_type(e2, t) || __tg_type(e3, t)) +#define __tg_type_corr(e1, e2, e3, t) \ + (__tg_type3(e1, e2, e3, t) || __tg_type3(e1, e2, e3, t _Complex)) +#define __tg_integer(e1, e2, e3) \ + (((__typeof__(e1))1.5 == 1) || ((__typeof__(e2))1.5 == 1) || \ + ((__typeof__(e3))1.5 == 1)) +#define __tg_is_complex(e1, e2, e3) \ + (__tg_type3(e1, e2, e3, float _Complex) || \ + __tg_type3(e1, e2, e3, double _Complex) || \ + __tg_type3(e1, e2, e3, long double _Complex) || \ + __tg_type3(e1, e2, e3, __typeof__(_Complex_I))) + +#define __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) \ + __builtin_choose_expr(__tg_type_corr(x, y, z, long double), \ + fnl(__VA_ARGS__), __builtin_choose_expr( \ + __tg_type_corr(x, y, z, double) || __tg_integer(x, y, z),\ + fn(__VA_ARGS__), fnf(__VA_ARGS__))) + +#define __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) \ + __builtin_choose_expr(__tg_is_complex(x, y, z), \ + __tg_impl_simple(x, y, z, cfn, cfnf, cfnl, __VA_ARGS__), \ + __tg_impl_simple(x, y, z, fn, fnf, fnl, __VA_ARGS__)) + +#else /* __GNUC__ */ +#error "<tgmath.h> not implemented for this compiler" +#endif /* !__GNUC__ */ + +/* Macros to save lots of repetition below */ +#define __tg_simple(x, fn) \ + __tg_impl_simple(x, x, x, fn, fn##f, fn##l, x) +#define __tg_simple2(x, y, fn) \ + __tg_impl_simple(x, x, y, fn, fn##f, fn##l, x, y) +#define __tg_simplev(x, fn, ...) \ + __tg_impl_simple(x, x, x, fn, fn##f, fn##l, __VA_ARGS__) +#define __tg_full(x, fn) \ + __tg_impl_full(x, x, x, fn, fn##f, fn##l, c##fn, c##fn##f, c##fn##l, x) + +/* 7.22#4 -- These macros expand to real or complex functions, depending on + * the type of their arguments. */ +#define acos(x) __tg_full(x, acos) +#define asin(x) __tg_full(x, asin) +#define atan(x) __tg_full(x, atan) +#define acosh(x) __tg_full(x, acosh) +#define asinh(x) __tg_full(x, asinh) +#define atanh(x) __tg_full(x, atanh) +#define cos(x) __tg_full(x, cos) +#define sin(x) __tg_full(x, sin) +#define tan(x) __tg_full(x, tan) +#define cosh(x) __tg_full(x, cosh) +#define sinh(x) __tg_full(x, sinh) +#define tanh(x) __tg_full(x, tanh) +#define exp(x) __tg_full(x, exp) +#define log(x) __tg_full(x, log) +#define pow(x, y) __tg_impl_full(x, x, y, pow, powf, powl, \ + cpow, cpowf, cpowl, x, y) +#define sqrt(x) __tg_full(x, sqrt) + +/* "The corresponding type-generic macro for fabs and cabs is fabs." */ +#define fabs(x) __tg_impl_full(x, x, x, fabs, fabsf, fabsl, \ + cabs, cabsf, cabsl, x) + +/* 7.22#5 -- These macros are only defined for arguments with real type. */ +#define atan2(x, y) __tg_simple2(x, y, atan2) +#define cbrt(x) __tg_simple(x, cbrt) +#define ceil(x) __tg_simple(x, ceil) +#define copysign(x, y) __tg_simple2(x, y, copysign) +#define erf(x) __tg_simple(x, erf) +#define erfc(x) __tg_simple(x, erfc) +#define exp2(x) __tg_simple(x, exp2) +#define expm1(x) __tg_simple(x, expm1) +#define fdim(x, y) __tg_simple2(x, y, fdim) +#define floor(x) __tg_simple(x, floor) +#define fma(x, y, z) __tg_impl_simple(x, y, z, fma, fmaf, fmal, x, y, z) +#define fmax(x, y) __tg_simple2(x, y, fmax) +#define fmin(x, y) __tg_simple2(x, y, fmin) +#define fmod(x, y) __tg_simple2(x, y, fmod) +#define frexp(x, y) __tg_simplev(x, frexp, x, y) +#define hypot(x, y) __tg_simple2(x, y, hypot) +#define ilogb(x) __tg_simple(x, ilogb) +#define ldexp(x, y) __tg_simplev(x, ldexp, x, y) +#define lgamma(x) __tg_simple(x, lgamma) +#define llrint(x) __tg_simple(x, llrint) +#define llround(x) __tg_simple(x, llround) +#define log10(x) __tg_simple(x, log10) +#define log1p(x) __tg_simple(x, log1p) +#define log2(x) __tg_simple(x, log2) +#define logb(x) __tg_simple(x, logb) +#define lrint(x) __tg_simple(x, lrint) +#define lround(x) __tg_simple(x, lround) +#define nearbyint(x) __tg_simple(x, nearbyint) +#define nextafter(x, y) __tg_simple2(x, y, nextafter) +#define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y) +#define remainder(x, y) __tg_simple2(x, y, remainder) +#define remquo(x, y, z) __tg_impl_simple(x, x, y, remquo, remquof, \ + remquol, x, y, z) +#define rint(x) __tg_simple(x, rint) +#define round(x) __tg_simple(x, round) +#define scalbn(x, y) __tg_simplev(x, scalbn, x, y) +#define scalbln(x, y) __tg_simplev(x, scalbln, x, y) +#define tgamma(x) __tg_simple(x, tgamma) +#define trunc(x) __tg_simple(x, trunc) + +/* 7.22#6 -- These macros always expand to complex functions. */ +#define carg(x) __tg_simple(x, carg) +#define cimag(x) __tg_simple(x, cimag) +#define conj(x) __tg_simple(x, conj) +#define cproj(x) __tg_simple(x, cproj) +#define creal(x) __tg_simple(x, creal) + +#endif /* !_TGMATH_H_ */ |