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 __BEGIN_DECLS 29 30 #if __GNUC__ >= 7 31 #define __isinfl(value) __builtin_isinfl(value) 32 #define __isnan(value) __builtin_isnan(value) 33 #define __isnanf(value) __builtin_isnanf(value) 34 #define __isnanl(value) __builtin_isnanl(value) 35 #define __isinf(value) __builtin_isinf(value) 36 #define __isinff(value) __builtin_isinff(value) 37 #endif 38 39 /* We might need to add support for more compilers here. But since ISO 40 C99 is out hopefully all maintained compilers will soon provide the data 41 types `float complex' and `double complex'. */ 42 #if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97) 43 # define _Complex __complex__ 44 #endif 45 46 #define complex _Complex 47 48 /* Narrowest imaginary unit. This depends on the floating-point 49 evaluation method. 50 XXX This probably has to go into a gcc related file. */ 51 #define _Complex_I (__extension__ 1.0iF) 52 53 /* Another more descriptive name is `I'. 54 XXX Once we have the imaginary support switch this to _Imaginary_I. */ 55 #undef I 56 #define I _Complex_I 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 #ifdef __STDC__ 83 # define __MATH_PRECNAME(name) name##f 84 #else 85 # define __MATH_PRECNAME(name) name/**/f 86 #endif 87 #include <bits/cmathcalls.h> 88 #undef _Mdouble_ 89 #undef __MATH_PRECNAME 90 91 /* And the long double versions. It is non-critical to define them 92 here unconditionally since `long double' is required in ISO C99. */ 93 #if (__STDC__ - 0 || __GNUC__ - 0) && !defined __NO_LONG_DOUBLE_MATH 94 # ifndef _Mlong_double_ 95 # define _Mlong_double_ long double 96 # endif 97 # define _Mdouble_ _Mlong_double_ 98 # ifdef __STDC__ 99 # define __MATH_PRECNAME(name) name##l 100 # else 101 # define __MATH_PRECNAME(name) name/**/l 102 # endif 103 # include <bits/cmathcalls.h> 104 #endif 105 #undef _Mdouble_ 106 #undef __MATH_PRECNAME 107 #undef __MATHDECL_1 108 #undef __MATHDECL 109 #undef __MATHCALL 110 111 __END_DECLS 112 113 #endif /* complex.h */ 114