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184 lines
7.9 KiB
184 lines
7.9 KiB
/* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/tgmath.h.html */ |
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/*- |
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* Copyright (c) 2004 Stefan Farfeleder. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* $FreeBSD$ |
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*/ |
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#ifndef _TGMATH_H_ |
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#define _TGMATH_H_ |
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#include <complex.h> |
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#include <math.h> |
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#ifdef log2 |
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#undef log2 |
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#endif |
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/* |
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* This implementation of <tgmath.h> requires two implementation-dependent |
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* macros to be defined: |
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* __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) |
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* Invokes fnl() if the corresponding real type of x, y or z is long |
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* double, fn() if it is double or any has an integer type, and fnf() |
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* otherwise. |
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* __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) |
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* Invokes [c]fnl() if the corresponding real type of x, y or z is long |
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* double, [c]fn() if it is double or any has an integer type, and |
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* [c]fnf() otherwise. The function with the 'c' prefix is called if |
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* any of x, y or z is a complex number. |
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* Both macros call the chosen function with all additional arguments passed |
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* to them, as given by __VA_ARGS__. |
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* |
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* Note that these macros cannot be implemented with C's ?: operator, |
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* because the return type of the whole expression would incorrectly be long |
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* double complex regardless of the argument types. |
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*/ |
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/* requires GCC >= 3.1 */ |
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#if !__GNUC_PREREQ (3, 1) |
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#error "<tgmath.h> not implemented for this compiler" |
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#endif |
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#define __tg_type(__e, __t) \ |
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__builtin_types_compatible_p(__typeof__(__e), __t) |
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#define __tg_type3(__e1, __e2, __e3, __t) \ |
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(__tg_type(__e1, __t) || __tg_type(__e2, __t) || \ |
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__tg_type(__e3, __t)) |
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#define __tg_type_corr(__e1, __e2, __e3, __t) \ |
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(__tg_type3(__e1, __e2, __e3, __t) || \ |
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__tg_type3(__e1, __e2, __e3, __t _Complex)) |
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#define __tg_integer(__e1, __e2, __e3) \ |
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(((__typeof__(__e1))1.5 == 1) || ((__typeof__(__e2))1.5 == 1) || \ |
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((__typeof__(__e3))1.5 == 1)) |
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#define __tg_is_complex(__e1, __e2, __e3) \ |
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(__tg_type3(__e1, __e2, __e3, float _Complex) || \ |
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__tg_type3(__e1, __e2, __e3, double _Complex) || \ |
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__tg_type3(__e1, __e2, __e3, long double _Complex) || \ |
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__tg_type3(__e1, __e2, __e3, __typeof__(_Complex_I))) |
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#ifdef _LDBL_EQ_DBL |
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#define __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) \ |
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__builtin_choose_expr(__tg_type_corr(x, y, z, long double), \ |
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fnl(__VA_ARGS__), __builtin_choose_expr( \ |
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__tg_type_corr(x, y, z, double) || __tg_integer(x, y, z),\ |
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fn(__VA_ARGS__), fnf(__VA_ARGS__))) |
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#else |
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#define __tg_impl_simple(__x, __y, __z, __fn, __fnf, __fnl, ...) \ |
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(__tg_type_corr(__x, __y, __z, double) || __tg_integer(__x, __y, __z)) \ |
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? __fn(__VA_ARGS__) : __fnf(__VA_ARGS__) |
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#endif |
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#define __tg_impl_full(__x, __y, __z, __fn, __fnf, __fnl, __cfn, __cfnf, __cfnl, ...) \ |
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__builtin_choose_expr(__tg_is_complex(__x, __y, __z), \ |
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__tg_impl_simple(__x, __y, __z, __cfn, __cfnf, __cfnl, __VA_ARGS__), \ |
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__tg_impl_simple(__x, __y, __z, __fn, __fnf, __fnl, __VA_ARGS__)) |
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/* Macros to save lots of repetition below */ |
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#define __tg_simple(__x, __fn) \ |
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__tg_impl_simple(__x, __x, __x, __fn, __fn##f, __fn##l, __x) |
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#define __tg_simple2(__x, __y, __fn) \ |
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__tg_impl_simple(__x, __x, __y, __fn, __fn##f, __fn##l, __x, __y) |
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#define __tg_simplev(__x, __fn, ...) \ |
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__tg_impl_simple(__x, __x, __x, __fn, __fn##f, __fn##l, __VA_ARGS__) |
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#define __tg_full(__x, __fn) \ |
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__tg_impl_full(__x, __x, __x, __fn, __fn##f, __fn##l, c##__fn, c##__fn##f, c##__fn##l, __x) |
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/* 7.22#4 -- These macros expand to real or complex functions, depending on |
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* the type of their arguments. */ |
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#define acos(__x) __tg_full(__x, acos) |
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#define asin(__x) __tg_full(__x, asin) |
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#define atan(__x) __tg_full(__x, atan) |
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#define acosh(__x) __tg_full(__x, acosh) |
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#define asinh(__x) __tg_full(__x, asinh) |
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#define atanh(__x) __tg_full(__x, atanh) |
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#define cos(__x) __tg_full(__x, cos) |
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#define sin(__x) __tg_full(__x, sin) |
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#define tan(__x) __tg_full(__x, tan) |
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#define cosh(__x) __tg_full(__x, cosh) |
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#define sinh(__x) __tg_full(__x, sinh) |
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#define tanh(__x) __tg_full(__x, tanh) |
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#define exp(__x) __tg_full(__x, exp) |
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#define log(__x) __tg_full(__x, log) |
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#define pow(__x, __y) __tg_impl_full(__x, __x, __y, pow, powf, powl, \ |
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cpow, cpowf, cpowl, __x, __y) |
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#define sqrt(__x) __tg_full(__x, sqrt) |
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/* "The corresponding type-generic macro for fabs and cabs is fabs." */ |
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#define fabs(__x) __tg_impl_full(__x, __x, __x, fabs, fabsf, fabsl, \ |
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cabs, cabsf, cabsl, __x) |
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/* 7.22#5 -- These macros are only defined for arguments with real type. */ |
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#define atan2(__x, __y) __tg_simple2(__x, __y, atan2) |
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#define cbrt(__x) __tg_simple(__x, cbrt) |
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#define ceil(__x) __tg_simple(__x, ceil) |
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#define copysign(__x, __y) __tg_simple2(__x, __y, copysign) |
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#define erf(__x) __tg_simple(__x, erf) |
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#define erfc(__x) __tg_simple(__x, erfc) |
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#define exp2(__x) __tg_simple(__x, exp2) |
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#define expm1(__x) __tg_simple(__x, expm1) |
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#define fdim(__x, __y) __tg_simple2(__x, __y, fdim) |
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#define floor(__x) __tg_simple(__x, floor) |
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#define fma(__x, __y, __z) __tg_impl_simple(__x, __y, __z, fma, fmaf, fmal, \ |
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__x, __y, __z) |
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#define fmax(__x, __y) __tg_simple2(__x, __y, fmax) |
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#define fmin(__x, __y) __tg_simple2(__x, __y, fmin) |
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#define fmod(__x, __y) __tg_simple2(__x, __y, fmod) |
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#define frexp(__x, __y) __tg_simplev(__x, frexp, __x, __y) |
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#define hypot(__x, __y) __tg_simple2(__x, __y, hypot) |
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#define ilogb(__x) __tg_simple(__x, ilogb) |
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#define ldexp(__x, __y) __tg_simplev(__x, ldexp, __x, __y) |
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#define lgamma(__x) __tg_simple(__x, lgamma) |
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#define llrint(__x) __tg_simple(__x, llrint) |
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#define llround(__x) __tg_simple(__x, llround) |
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#define log10(__x) __tg_simple(__x, log10) |
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#define log1p(__x) __tg_simple(__x, log1p) |
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#define log2(__x) __tg_simple(__x, log2) |
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#define logb(__x) __tg_simple(__x, logb) |
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#define lrint(__x) __tg_simple(__x, lrint) |
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#define lround(__x) __tg_simple(__x, lround) |
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#define nearbyint(__x) __tg_simple(__x, nearbyint) |
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#define nextafter(__x, __y) __tg_simple2(__x, __y, nextafter) |
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/* not yet implemented even for _LDBL_EQ_DBL platforms |
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#define nexttoward(__x, __y) __tg_simplev(__x, nexttoward, __x, __y) |
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*/ |
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#define remainder(__x, __y) __tg_simple2(__x, __y, remainder) |
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#define remquo(__x, __y, __z) __tg_impl_simple(__x, __x, __y, remquo, remquof, \ |
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remquol, __x, __y, __z) |
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#define rint(__x) __tg_simple(__x, rint) |
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#define round(__x) __tg_simple(__x, round) |
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#define scalbn(__x, __y) __tg_simplev(__x, scalbn, __x, __y) |
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#define scalbln(__x, __y) __tg_simplev(__x, scalbln, __x, __y) |
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#define tgamma(__x) __tg_simple(__x, tgamma) |
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#define trunc(__x) __tg_simple(__x, trunc) |
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/* 7.22#6 -- These macros always expand to complex functions. */ |
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#define carg(__x) __tg_simple(__x, carg) |
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#define cimag(__x) __tg_simple(__x, cimag) |
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#define conj(__x) __tg_simple(__x, conj) |
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#define cproj(__x) __tg_simple(__x, cproj) |
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#define creal(__x) __tg_simple(__x, creal) |
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#endif /* !_TGMATH_H_ */
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