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b168057a | 1 | /* Copyright (C) 1997-2015 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
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5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
4cca6b86 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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17 | |
18 | /* | |
d1646309 | 19 | * ISO C99: 7.3 Complex arithmetic <complex.h> |
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20 | */ |
21 | ||
22 | #ifndef _COMPLEX_H | |
23 | #define _COMPLEX_H 1 | |
5107cf1d | 24 | |
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25 | #include <features.h> |
26 | ||
63ae7b63 | 27 | /* Get general and ISO C99 specific information. */ |
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28 | #include <bits/mathdef.h> |
29 | ||
993b3242 | 30 | __BEGIN_DECLS |
4cca6b86 | 31 | |
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32 | /* We might need to add support for more compilers here. But since ISO |
33 | C99 is out hopefully all maintained compilers will soon provide the data | |
4cca6b86 | 34 | types `float complex' and `double complex'. */ |
b4a555d6 | 35 | #if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97) |
1792d4db | 36 | # define _Complex __complex__ |
4cca6b86 UD |
37 | #endif |
38 | ||
5985c772 | 39 | #define complex _Complex |
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40 | |
41 | /* Narrowest imaginary unit. This depends on the floating-point | |
42 | evaluation method. | |
43 | XXX This probably has to go into a gcc related file. */ | |
5985c772 | 44 | #define _Complex_I (__extension__ 1.0iF) |
4cca6b86 | 45 | |
fe0ec73e UD |
46 | /* Another more descriptive name is `I'. |
47 | XXX Once we have the imaginary support switch this to _Imaginary_I. */ | |
4cca6b86 | 48 | #undef I |
fe0ec73e | 49 | #define I _Complex_I |
4cca6b86 | 50 | |
ac097f5c UD |
51 | #if defined __USE_ISOC11 && __GNUC_PREREQ (4, 7) |
52 | /* Macros to expand into expression of specified complex type. */ | |
53 | # define CMPLX(x, y) __builtin_complex ((double) (x), (double) (y)) | |
54 | # define CMPLXF(x, y) __builtin_complex ((float) (x), (float) (y)) | |
2ee094ff | 55 | # define CMPLXL(x, y) __builtin_complex ((long double) (x), (long double) (y)) |
ac097f5c UD |
56 | #endif |
57 | ||
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58 | /* The file <bits/cmathcalls.h> contains the prototypes for all the |
59 | actual math functions. These macros are used for those prototypes, | |
60 | so we can easily declare each function as both `name' and `__name', | |
4cca6b86 UD |
61 | and can declare the float versions `namef' and `__namef'. */ |
62 | ||
63 | #define __MATHCALL(function, args) \ | |
64 | __MATHDECL (_Mdouble_complex_,function, args) | |
65 | #define __MATHDECL(type, function, args) \ | |
66 | __MATHDECL_1(type, function, args); \ | |
67 | __MATHDECL_1(type, __CONCAT(__,function), args) | |
68 | #define __MATHDECL_1(type, function, args) \ | |
c1422e5b | 69 | extern type __MATH_PRECNAME(function) args __THROW |
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70 | |
71 | #define _Mdouble_ double | |
72 | #define __MATH_PRECNAME(name) name | |
5107cf1d | 73 | #include <bits/cmathcalls.h> |
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74 | #undef _Mdouble_ |
75 | #undef __MATH_PRECNAME | |
76 | ||
77 | /* Now the float versions. */ | |
78 | #ifndef _Mfloat_ | |
1792d4db | 79 | # define _Mfloat_ float |
4cca6b86 UD |
80 | #endif |
81 | #define _Mdouble_ _Mfloat_ | |
7071ad79 | 82 | #define __MATH_PRECNAME(name) name##f |
5107cf1d | 83 | #include <bits/cmathcalls.h> |
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84 | #undef _Mdouble_ |
85 | #undef __MATH_PRECNAME | |
86 | ||
87 | /* And the long double versions. It is non-critical to define them | |
63ae7b63 | 88 | here unconditionally since `long double' is required in ISO C99. */ |
7071ad79 JM |
89 | #if !(defined __NO_LONG_DOUBLE_MATH && defined _LIBC) \ |
90 | || defined __LDBL_COMPAT | |
c6251f03 RM |
91 | # ifdef __LDBL_COMPAT |
92 | # undef __MATHDECL_1 | |
93 | # define __MATHDECL_1(type, function, args) \ | |
4442d58f | 94 | extern type __REDIRECT_NTH(__MATH_PRECNAME(function), args, function) |
c6251f03 RM |
95 | # endif |
96 | ||
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97 | # ifndef _Mlong_double_ |
98 | # define _Mlong_double_ long double | |
99 | # endif | |
100 | # define _Mdouble_ _Mlong_double_ | |
7071ad79 | 101 | # define __MATH_PRECNAME(name) name##l |
1792d4db | 102 | # include <bits/cmathcalls.h> |
4cca6b86 | 103 | #endif |
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104 | #undef _Mdouble_ |
105 | #undef __MATH_PRECNAME | |
106 | #undef __MATHDECL_1 | |
107 | #undef __MATHDECL | |
108 | #undef __MATHCALL | |
109 | ||
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110 | __END_DECLS |
111 | ||
4cca6b86 | 112 | #endif /* complex.h */ |