1 /* Copyright (C) 1997, 1998, 1999, 2000 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, write to the Free 16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 17 02111-1307 USA. */ 18 19 /* 20 * ISO C99: 7.3 Complex arithmetic <complex.h> 21 */ 22 23 #ifndef _COMPLEX_H 24 #define _COMPLEX_H 1 25 26 #include <features.h> 27 28 /* Get general and ISO C99 specific information. */ 29 #include <bits/mathdef.h> 30 31 __BEGIN_DECLS 32 33 /* We might need to add support for more compilers here. But since ISO 34 C99 is out hopefully all maintained compilers will soon provide the data 35 types `float complex' and `double complex'. */ 36 #if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97) 37 # define _Complex __complex__ 38 #endif 39 40 #define complex _Complex 41 42 /* Narrowest imaginary unit. This depends on the floating-point 43 evaluation method. 44 XXX This probably has to go into a gcc related file. */ 45 #define _Complex_I (__extension__ 1.0iF) 46 47 /* Another more descriptive name is `I'. 48 XXX Once we have the imaginary support switch this to _Imaginary_I. */ 49 #undef I 50 #define I _Complex_I 51 52 /* The file <bits/cmathcalls.h> contains the prototypes for all the 53 actual math functions. These macros are used for those prototypes, 54 so we can easily declare each function as both `name' and `__name', 55 and can declare the float versions `namef' and `__namef'. */ 56 57 #define __MATHCALL(function, args) \ 58 __MATHDECL (_Mdouble_complex_,function, args) 59 #define __MATHDECL(type, function, args) \ 60 __MATHDECL_1(type, function, args); \ 61 __MATHDECL_1(type, __CONCAT(__,function), args) 62 #define __MATHDECL_1(type, function, args) \ 63 extern type __MATH_PRECNAME(function) args __THROW 64 65 #define _Mdouble_ double 66 #define __MATH_PRECNAME(name) name 67 #include <bits/cmathcalls.h> 68 #undef _Mdouble_ 69 #undef __MATH_PRECNAME 70 71 /* Now the float versions. */ 72 #ifndef _Mfloat_ 73 # define _Mfloat_ float 74 #endif 75 #define _Mdouble_ _Mfloat_ 76 #ifdef __STDC__ 77 # define __MATH_PRECNAME(name) name##f 78 #else 79 # define __MATH_PRECNAME(name) name/**/f 80 #endif 81 #include <bits/cmathcalls.h> 82 #undef _Mdouble_ 83 #undef __MATH_PRECNAME 84 85 /* And the long double versions. It is non-critical to define them 86 here unconditionally since `long double' is required in ISO C99. */ 87 #if __STDC__ - 0 || __GNUC__ - 0 && !defined __NO_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