/* Copyright (C) 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* * ISO C 9X: 7.8 Complex arithmetic <complex.h> */ #ifndef _COMPLEX_H #define _COMPLEX_H 1 #include <features.h> __BEGIN_DECLS /* We might need to add support for more compilers here. But once ISO C 9X is out hopefully all maintained compilers will provide the data types `float complex' and `double complex'. */ #if (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) || __GNUC__ > 2 # define complex __complex__ #endif /* Narrowest imaginary unit. This depends on the floating-point evaluation method. XXX This probably has to go into a gcc related file. */ #define _Imaginary_I (1.0iF) /* Another more descriptive name is `I'. */ #undef I #define I _Imaginary_I /* Optimization aids. This is not yet implemented in gcc and once it is this will probably be available in a gcc header. */ #define CX_LIMITED_RANGE_ON #define CX_LIMITED_RANGE_OFF #define CX_LIMITED_RANGE_DEFAULT /* The file <cmathcalls.h> contains the prototypes for all the actual math functions. These macros are used for those prototypes, so we can easily declare each function as both `name' and `__name', and can declare the float versions `namef' and `__namef'. */ #define __MATHCALL(function, args) \ __MATHDECL (_Mdouble_complex_,function, args) #define __MATHDECL(type, function, args) \ __MATHDECL_1(type, function, args); \ __MATHDECL_1(type, __CONCAT(__,function), args) #define __MATHDECL_1(type, function, args) \ extern type __MATH_PRECNAME(function) args #define _Mdouble_ double #define __MATH_PRECNAME(name) name #include <cmathcalls.h> #undef _Mdouble_ #undef __MATH_PRECNAME /* Now the float versions. */ #ifndef _Mfloat_ #define _Mfloat_ float #endif #define _Mdouble_ _Mfloat_ #ifdef __STDC__ #define __MATH_PRECNAME(name) name##f #else #define __MATH_PRECNAME(name) name/**/f #endif #include <cmathcalls.h> #undef _Mdouble_ #undef __MATH_PRECNAME /* And the long double versions. It is non-critical to define them here unconditionally since `long double' is required in ISO C 9X. */ #ifndef _Mlong_double_ #define _Mlong_double_ long double #endif #define _Mdouble_ _Mlong_double_ #ifdef __STDC__ #define __MATH_PRECNAME(name) name##l #else #define __MATH_PRECNAME(name) name/**/l #endif #include <cmathcalls.h> #undef _Mdouble_ #undef __MATH_PRECNAME #undef __MATHDECL_1 #undef __MATHDECL #undef __MATHCALL __END_DECLS #endif /* complex.h */