complex.h
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上传日期:2009-04-28
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- /* Copyright (C) 1997, 1998, 1999, 2000 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 Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 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
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- /*
- * ISO C99: 7.3 Complex arithmetic <complex.h>
- */
- #ifndef _COMPLEX_H
- #define _COMPLEX_H 1
- #include <features.h>
- /* Get general and ISO C99 specific information. */
- #include <bits/mathdef.h>
- __BEGIN_DECLS
- /* We might need to add support for more compilers here. But since ISO
- C99 is out hopefully all maintained compilers will soon provide the data
- types `float complex' and `double complex'. */
- #if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97)
- # define _Complex __complex__
- #endif
- #define complex _Complex
- /* Narrowest imaginary unit. This depends on the floating-point
- evaluation method.
- XXX This probably has to go into a gcc related file. */
- #define _Complex_I (__extension__ 1.0iF)
- /* Another more descriptive name is `I'.
- XXX Once we have the imaginary support switch this to _Imaginary_I. */
- #undef I
- #define I _Complex_I
- /* The file <bits/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 __THROW
- #define _Mdouble_ double
- #define __MATH_PRECNAME(name) name
- #include <bits/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 <bits/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 C99. */
- #if __STDC__ - 0 || __GNUC__ - 0 && !defined __NO_LONG_DOUBLE_MATH
- # 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 <bits/cmathcalls.h>
- #endif
- #undef _Mdouble_
- #undef __MATH_PRECNAME
- #undef __MATHDECL_1
- #undef __MATHDECL
- #undef __MATHCALL
- __END_DECLS
- #endif /* complex.h */