1 | /* Copyright (C) 1997-2016 Free Software Foundation, Inc. |
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 |
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. |
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 |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | /* |
19 | * ISO C99: 7.3 Complex arithmetic <complex.h> |
20 | */ |
21 | |
22 | #ifndef _COMPLEX_H |
23 | #define _COMPLEX_H 1 |
24 | |
25 | #include <features.h> |
26 | |
27 | /* Get general and ISO C99 specific information. */ |
28 | #include <bits/mathdef.h> |
29 | |
30 | __BEGIN_DECLS |
31 | |
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 |
34 | types `float complex' and `double complex'. */ |
35 | #if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97) |
36 | # define _Complex __complex__ |
37 | #endif |
38 | |
39 | #define complex _Complex |
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. */ |
44 | #define _Complex_I (__extension__ 1.0iF) |
45 | |
46 | /* Another more descriptive name is `I'. |
47 | XXX Once we have the imaginary support switch this to _Imaginary_I. */ |
48 | #undef I |
49 | #define I _Complex_I |
50 | |
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)) |
55 | # define CMPLXL(x, y) __builtin_complex ((long double) (x), (long double) (y)) |
56 | #endif |
57 | |
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', |
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) \ |
69 | extern type __MATH_PRECNAME(function) args __THROW |
70 | |
71 | #define _Mdouble_ double |
72 | #define __MATH_PRECNAME(name) name |
73 | #include <bits/cmathcalls.h> |
74 | #undef _Mdouble_ |
75 | #undef __MATH_PRECNAME |
76 | |
77 | /* Now the float versions. */ |
78 | #ifndef _Mfloat_ |
79 | # define _Mfloat_ float |
80 | #endif |
81 | #define _Mdouble_ _Mfloat_ |
82 | #define __MATH_PRECNAME(name) name##f |
83 | #include <bits/cmathcalls.h> |
84 | #undef _Mdouble_ |
85 | #undef __MATH_PRECNAME |
86 | |
87 | /* And the long double versions. It is non-critical to define them |
88 | here unconditionally since `long double' is required in ISO C99. */ |
89 | #if !(defined __NO_LONG_DOUBLE_MATH && defined _LIBC) \ |
90 | || defined __LDBL_COMPAT |
91 | # ifdef __LDBL_COMPAT |
92 | # undef __MATHDECL_1 |
93 | # define __MATHDECL_1(type, function, args) \ |
94 | extern type __REDIRECT_NTH(__MATH_PRECNAME(function), args, function) |
95 | # endif |
96 | |
97 | # ifndef _Mlong_double_ |
98 | # define _Mlong_double_ long double |
99 | # endif |
100 | # define _Mdouble_ _Mlong_double_ |
101 | # define __MATH_PRECNAME(name) name##l |
102 | # include <bits/cmathcalls.h> |
103 | #endif |
104 | #undef _Mdouble_ |
105 | #undef __MATH_PRECNAME |
106 | #undef __MATHDECL_1 |
107 | #undef __MATHDECL |
108 | #undef __MATHCALL |
109 | |
110 | __END_DECLS |
111 | |
112 | #endif /* complex.h */ |
113 | |