2 * Copyright (c) 2004 Stefan Farfeleder.
5 * Copyright (c) 2012 Ed Schouten <ed@FreeBSD.org>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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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()
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__.
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.
59 #error "<tgmath.h> not implemented for this compiler"
62 #define __tg_generic_simple(x, fnl, fn, fnf) \
63 __generic(x, long double _Complex, fnl, \
64 __generic(x, double _Complex, fn, \
65 __generic(x, float _Complex, fnf, \
66 __generic(x, long double, fnl, \
67 __generic(x, float, fnf, fn)))))
68 #define __tg_impl_simple(x, y, z, fnl, fn, fnf, ...) \
69 __tg_generic_simple(x, \
70 __tg_generic_simple(y, \
71 __tg_generic_simple(z, fnl, fnl, fnl), \
72 __tg_generic_simple(z, fnl, fnl, fnl), \
73 __tg_generic_simple(z, fnl, fnl, fnl)), \
74 __tg_generic_simple(y, \
75 __tg_generic_simple(z, fnl, fnl, fnl), \
76 __tg_generic_simple(z, fnl, fn , fn ), \
77 __tg_generic_simple(z, fnl, fn , fn )), \
78 __tg_generic_simple(y, \
79 __tg_generic_simple(z, fnl, fnl, fnl), \
80 __tg_generic_simple(z, fnl, fn , fn ), \
81 __tg_generic_simple(z, fnl, fn , fnf)))(__VA_ARGS__)
82 #define __tg_generic_full(x, cfnl, cfn, cfnf, fnl, fn, fnf) \
83 __generic(x, long double _Complex, cfnl, \
84 __generic(x, double _Complex, cfn, \
85 __generic(x, float _Complex, cfnf, \
86 __generic(x, long double, fnl, \
87 __generic(x, float, fnf, fn)))))
88 #define __tg_impl_full(x, y, cfnl, cfn, cfnf, fnl, fn, fnf, ...) \
89 __tg_generic_full(x, \
90 __tg_generic_full(y, cfnl, cfnl, cfnl, cfnl, cfnl, cfnl), \
91 __tg_generic_full(y, cfnl, cfn , cfn , cfnl, cfn , cfn ), \
92 __tg_generic_full(y, cfnl, cfn , cfnf, cfnl, cfn , cfnf), \
93 __tg_generic_full(y, cfnl, cfnl, cfnl, fnl , fnl , fnl ), \
94 __tg_generic_full(y, cfnl, cfn , cfn , fnl , fn , fn ), \
95 __tg_generic_full(y, cfnl, cfn , cfnf, fnl , fn , fnf )) \
98 /* Macros to save lots of repetition below */
99 #define __tg_simple(x, fn) \
100 __tg_impl_simple(x, x, x, fn##l, fn, fn##f, x)
101 #define __tg_simple2(x, y, fn) \
102 __tg_impl_simple(x, x, y, fn##l, fn, fn##f, x, y)
103 #define __tg_simple3(x, y, z, fn) \
104 __tg_impl_simple(x, y, z, fn##l, fn, fn##f, x, y, z)
105 #define __tg_simplev(x, fn, ...) \
106 __tg_impl_simple(x, x, x, fn##l, fn, fn##f, __VA_ARGS__)
107 #define __tg_full(x, fn) \
108 __tg_impl_full(x, x, c##fn##l, c##fn, c##fn##f, fn##l, fn, fn##f, x)
109 #define __tg_full2(x, y, fn) \
110 __tg_impl_full(x, y, c##fn##l, c##fn, c##fn##f, fn##l, fn, fn##f, x, y)
112 /* 7.22#4 -- These macros expand to real or complex functions, depending on
113 * the type of their arguments. */
114 #define acos(x) __tg_full(x, acos)
115 #define asin(x) __tg_full(x, asin)
116 #define atan(x) __tg_full(x, atan)
117 #define acosh(x) __tg_full(x, acosh)
118 #define asinh(x) __tg_full(x, asinh)
119 #define atanh(x) __tg_full(x, atanh)
120 #define cos(x) __tg_full(x, cos)
121 #define sin(x) __tg_full(x, sin)
122 #define tan(x) __tg_full(x, tan)
123 #define cosh(x) __tg_full(x, cosh)
124 #define sinh(x) __tg_full(x, sinh)
125 #define tanh(x) __tg_full(x, tanh)
126 #define exp(x) __tg_full(x, exp)
127 #define log(x) __tg_full(x, log)
128 #define pow(x, y) __tg_full2(x, y, pow)
129 #define sqrt(x) __tg_full(x, sqrt)
131 /* "The corresponding type-generic macro for fabs and cabs is fabs." */
132 #define fabs(x) __tg_impl_full(x, x, cabsl, cabs, cabsf, \
133 fabsl, fabs, fabsf, x)
135 /* 7.22#5 -- These macros are only defined for arguments with real type. */
136 #define atan2(x, y) __tg_simple2(x, y, atan2)
137 #define cbrt(x) __tg_simple(x, cbrt)
138 #define ceil(x) __tg_simple(x, ceil)
139 #define copysign(x, y) __tg_simple2(x, y, copysign)
140 #define erf(x) __tg_simple(x, erf)
141 #define erfc(x) __tg_simple(x, erfc)
142 #define exp2(x) __tg_simple(x, exp2)
143 #define expm1(x) __tg_simple(x, expm1)
144 #define fdim(x, y) __tg_simple2(x, y, fdim)
145 #define floor(x) __tg_simple(x, floor)
146 #define fma(x, y, z) __tg_simple3(x, y, z, fma)
147 #define fmax(x, y) __tg_simple2(x, y, fmax)
148 #define fmin(x, y) __tg_simple2(x, y, fmin)
149 #define fmod(x, y) __tg_simple2(x, y, fmod)
150 #define frexp(x, y) __tg_simplev(x, frexp, x, y)
151 #define hypot(x, y) __tg_simple2(x, y, hypot)
152 #define ilogb(x) __tg_simple(x, ilogb)
153 #define ldexp(x, y) __tg_simplev(x, ldexp, x, y)
154 #define lgamma(x) __tg_simple(x, lgamma)
155 #define llrint(x) __tg_simple(x, llrint)
156 #define llround(x) __tg_simple(x, llround)
157 #define log10(x) __tg_simple(x, log10)
158 #define log1p(x) __tg_simple(x, log1p)
159 #define log2(x) __tg_simple(x, log2)
160 #define logb(x) __tg_simple(x, logb)
161 #define lrint(x) __tg_simple(x, lrint)
162 #define lround(x) __tg_simple(x, lround)
163 #define nearbyint(x) __tg_simple(x, nearbyint)
164 #define nextafter(x, y) __tg_simple2(x, y, nextafter)
165 #define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y)
166 #define remainder(x, y) __tg_simple2(x, y, remainder)
167 #define remquo(x, y, z) __tg_impl_simple(x, x, y, remquol, remquo, \
169 #define rint(x) __tg_simple(x, rint)
170 #define round(x) __tg_simple(x, round)
171 #define scalbn(x, y) __tg_simplev(x, scalbn, x, y)
172 #define scalbln(x, y) __tg_simplev(x, scalbln, x, y)
173 #define tgamma(x) __tg_simple(x, tgamma)
174 #define trunc(x) __tg_simple(x, trunc)
176 /* 7.22#6 -- These macros always expand to complex functions. */
177 #define carg(x) __tg_simple(x, carg)
178 #define cimag(x) __tg_simple(x, cimag)
179 #define conj(x) __tg_simple(x, conj)
180 #define cproj(x) __tg_simple(x, cproj)
181 #define creal(x) __tg_simple(x, creal)
183 #endif /* !_TGMATH_H_ */