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Diffstat (limited to 'math/complex.h')
| -rw-r--r-- | math/complex.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/math/complex.h b/math/complex.h new file mode 100644 index 0000000000..6fc5c1975f --- /dev/null +++ b/math/complex.h @@ -0,0 +1,102 @@ +/* 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 + +/* 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 (DBL_EPSISON * 1.0i) + +/* Another more descriptive name is `I'. */ +#undef I +#define I _Imaginary_I + + +/* Optimization aids. This is not yet implemented in gcc and yonce 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 + +#endif /* complex.h */ |