2 * Copyright (c) 2004 Stefan Farfeleder.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer.
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12 * documentation and/or other materials provided with the distribution.
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36 * This implementation of <tgmath.h> requires two implementation-dependent
37 * macros to be defined:
38 * __tg_impl_simple(x, y, z, fn, fnf, fnl, ...)
39 * Invokes fnl() if the corresponding real type of x, y or z is long
40 * double, fn() if it is double or any has an integer type, and fnf()
42 * __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...)
43 * Invokes [c]fnl() if the corresponding real type of x, y or z is long
44 * double, [c]fn() if it is double or any has an integer type, and
45 * [c]fnf() otherwise. The function with the 'c' prefix is called if
46 * any of x, y or z is a complex number.
47 * Both macros call the chosen function with all additional arguments passed
48 * to them, as given by __VA_ARGS__.
50 * Note that these macros cannot be implemented with C's ?: operator,
51 * because the return type of the whole expression would incorrectly be long
52 * double complex regardless of the argument types.
55 #if __GNUC_PREREQ__(3, 1)
56 #define __tg_type(e, t) __builtin_types_compatible_p(__typeof__(e), t)
57 #define __tg_type3(e1, e2, e3, t) \
58 (__tg_type(e1, t) || __tg_type(e2, t) || __tg_type(e3, t))
59 #define __tg_type_corr(e1, e2, e3, t) \
60 (__tg_type3(e1, e2, e3, t) || __tg_type3(e1, e2, e3, t _Complex))
61 #define __tg_integer(e1, e2, e3) \
62 (((__typeof__(e1))1.5 == 1) || ((__typeof__(e2))1.5 == 1) || \
63 ((__typeof__(e3))1.5 == 1))
64 #define __tg_is_complex(e1, e2, e3) \
65 (__tg_type3(e1, e2, e3, float _Complex) || \
66 __tg_type3(e1, e2, e3, double _Complex) || \
67 __tg_type3(e1, e2, e3, long double _Complex) || \
68 __tg_type3(e1, e2, e3, __typeof__(_Complex_I)))
70 #define __tg_impl_simple(x, y, z, fn, fnf, fnl, ...) \
71 __builtin_choose_expr(__tg_type_corr(x, y, z, long double), \
72 fnl(__VA_ARGS__), __builtin_choose_expr( \
73 __tg_type_corr(x, y, z, double) || __tg_integer(x, y, z),\
74 fn(__VA_ARGS__), fnf(__VA_ARGS__)))
76 #define __tg_impl_full(x, y, z, fn, fnf, fnl, cfn, cfnf, cfnl, ...) \
77 __builtin_choose_expr(__tg_is_complex(x, y, z), \
78 __tg_impl_simple(x, y, z, cfn, cfnf, cfnl, __VA_ARGS__), \
79 __tg_impl_simple(x, y, z, fn, fnf, fnl, __VA_ARGS__))
82 #error "<tgmath.h> not implemented for this compiler"
83 #endif /* !__GNUC__ */
85 /* Macros to save lots of repetition below */
86 #define __tg_simple(x, fn) \
87 __tg_impl_simple(x, x, x, fn, fn##f, fn##l, x)
88 #define __tg_simple2(x, y, fn) \
89 __tg_impl_simple(x, x, y, fn, fn##f, fn##l, x, y)
90 #define __tg_simplev(x, fn, ...) \
91 __tg_impl_simple(x, x, x, fn, fn##f, fn##l, __VA_ARGS__)
92 #define __tg_full(x, fn) \
93 __tg_impl_full(x, x, x, fn, fn##f, fn##l, c##fn, c##fn##f, c##fn##l, x)
95 /* 7.22#4 -- These macros expand to real or complex functions, depending on
96 * the type of their arguments. */
97 #define acos(x) __tg_full(x, acos)
98 #define asin(x) __tg_full(x, asin)
99 #define atan(x) __tg_full(x, atan)
100 #define acosh(x) __tg_full(x, acosh)
101 #define asinh(x) __tg_full(x, asinh)
102 #define atanh(x) __tg_full(x, atanh)
103 #define cos(x) __tg_full(x, cos)
104 #define sin(x) __tg_full(x, sin)
105 #define tan(x) __tg_full(x, tan)
106 #define cosh(x) __tg_full(x, cosh)
107 #define sinh(x) __tg_full(x, sinh)
108 #define tanh(x) __tg_full(x, tanh)
109 #define exp(x) __tg_full(x, exp)
110 #define log(x) __tg_full(x, log)
111 #define pow(x, y) __tg_impl_full(x, x, y, pow, powf, powl, \
112 cpow, cpowf, cpowl, x, y)
113 #define sqrt(x) __tg_full(x, sqrt)
115 /* "The corresponding type-generic macro for fabs and cabs is fabs." */
116 #define fabs(x) __tg_impl_full(x, x, x, fabs, fabsf, fabsl, \
117 cabs, cabsf, cabsl, x)
119 /* 7.22#5 -- These macros are only defined for arguments with real type. */
120 #define atan2(x, y) __tg_simple2(x, y, atan2)
121 #define cbrt(x) __tg_simple(x, cbrt)
122 #define ceil(x) __tg_simple(x, ceil)
123 #define copysign(x, y) __tg_simple2(x, y, copysign)
124 #define erf(x) __tg_simple(x, erf)
125 #define erfc(x) __tg_simple(x, erfc)
126 #define exp2(x) __tg_simple(x, exp2)
127 #define expm1(x) __tg_simple(x, expm1)
128 #define fdim(x, y) __tg_simple2(x, y, fdim)
129 #define floor(x) __tg_simple(x, floor)
130 #define fma(x, y, z) __tg_impl_simple(x, y, z, fma, fmaf, fmal, x, y, z)
131 #define fmax(x, y) __tg_simple2(x, y, fmax)
132 #define fmin(x, y) __tg_simple2(x, y, fmin)
133 #define fmod(x, y) __tg_simple2(x, y, fmod)
134 #define frexp(x, y) __tg_simplev(x, frexp, x, y)
135 #define hypot(x, y) __tg_simple2(x, y, hypot)
136 #define ilogb(x) __tg_simple(x, ilogb)
137 #define ldexp(x, y) __tg_simplev(x, ldexp, x, y)
138 #define lgamma(x) __tg_simple(x, lgamma)
139 #define llrint(x) __tg_simple(x, llrint)
140 #define llround(x) __tg_simple(x, llround)
141 #define log10(x) __tg_simple(x, log10)
142 #define log1p(x) __tg_simple(x, log1p)
143 #define log2(x) __tg_simple(x, log2)
144 #define logb(x) __tg_simple(x, logb)
145 #define lrint(x) __tg_simple(x, lrint)
146 #define lround(x) __tg_simple(x, lround)
147 #define nearbyint(x) __tg_simple(x, nearbyint)
148 #define nextafter(x, y) __tg_simple2(x, y, nextafter)
149 #define nexttoward(x, y) __tg_simplev(x, nexttoward, x, y)
150 #define remainder(x, y) __tg_simple2(x, y, remainder)
151 #define remquo(x, y, z) __tg_impl_simple(x, x, y, remquo, remquof, \
153 #define rint(x) __tg_simple(x, rint)
154 #define round(x) __tg_simple(x, round)
155 #define scalbn(x, y) __tg_simplev(x, scalbn, x, y)
156 #define scalbln(x, y) __tg_simplev(x, scalbln, x, y)
157 #define tgamma(x) __tg_simple(x, tgamma)
158 #define trunc(x) __tg_simple(x, trunc)
160 /* 7.22#6 -- These macros always expand to complex functions. */
161 #define carg(x) __tg_simple(x, carg)
162 #define cimag(x) __tg_simple(x, cimag)
163 #define conj(x) __tg_simple(x, conj)
164 #define cproj(x) __tg_simple(x, cproj)
165 #define creal(x) __tg_simple(x, creal)
167 #endif /* !_TGMATH_H_ */