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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 <sys/types.h>

#include <features.h>

__BEGIN_DECLS

#define __CONCAT(x,y) x ## y

/* 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 <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

#if 0

/* 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 <cmathcalls.h>

#endif

#endif

#undef  _Mdouble_

#undef  __MATH_PRECNAME

#undef  __MATHDECL_1

#undef  __MATHDECL

#undef  __MATHCALL

__END_DECLS

#endif /* complex.h */