1 /* Copyright (C) 1997, 1998, 1999, 2000, 2006 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 /* The file <bits/cmathcalls.h> contains the prototypes for all the 52 actual math functions. These macros are used for those prototypes, 53 so we can easily declare each function as both `name' and `__name', 54 and can declare the float versions `namef' and `__namef'. */ 55 56 #define __MATHCALL(function, args) \ 57 __MATHDECL(_Mdouble_complex_,function, args) 58 #define __MATHDECL(type, function, args) \ 59 __MATHDECL_1(type, function, args); \ 60 __MATHDECL_1(type, __CONCAT(__,function), args) 61 #define __MATHDECL_1(type, function, args) \ 62 extern type __MATH_PRECNAME(function) args __THROW 63 64 #define _Mdouble_ double 65 #define __MATH_PRECNAME(name) name 66 #include <bits/cmathcalls.h> 67 #undef _Mdouble_ 68 #undef __MATH_PRECNAME 69 70 /* Now the float versions. */ 71 #ifndef _Mfloat_ 72 # define _Mfloat_ float 73 #endif 74 #define _Mdouble_ _Mfloat_ 75 #ifdef __STDC__ 76 # define __MATH_PRECNAME(name) name##f 77 #else 78 # define __MATH_PRECNAME(name) name/**/f 79 #endif 80 #include <bits/cmathcalls.h> 81 #undef _Mdouble_ 82 #undef __MATH_PRECNAME 83 84 /* And the long double versions. It is non-critical to define them 85 here unconditionally since `long double' is required in ISO C99. */ 86 #if (__STDC__ - 0 || __GNUC__ - 0) \ 87 && defined __UCLIBC_HAS_LONG_DOUBLE_MATH__ 88 # ifndef _Mlong_double_ 89 # define _Mlong_double_ long double 90 # endif 91 # define _Mdouble_ _Mlong_double_ 92 # ifdef __STDC__ 93 # define __MATH_PRECNAME(name) name##l 94 # else 95 # define __MATH_PRECNAME(name) name/**/l 96 # endif 97 # include <bits/cmathcalls.h> 98 #endif 99 #undef _Mdouble_ 100 #undef __MATH_PRECNAME 101 #undef __MATHDECL_1 102 #undef __MATHDECL 103 #undef __MATHCALL 104 105 __END_DECLS 106 107 #endif /* complex.h */ 108