1: /* Copyright (C) 1997, 1998, 1999, 2000, 2006 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: /* Get general and ISO C99 specific information.  */
   29: #include <bits/mathdef.h>
   30: 
   31: __BEGIN_DECLS
   32: 
   33: /* We might need to add support for more compilers here.  But since ISO
   34:    C99 is out hopefully all maintained compilers will soon provide the data
   35:    types `float complex' and `double complex'.  */
   36: #if __GNUC_PREREQ (2, 7) && !__GNUC_PREREQ (2, 97)
   37: # define _Complex __complex__
   38: #endif
   39: 
   40: #define complex         _Complex
   41: 
   42: /* Narrowest imaginary unit.  This depends on the floating-point
   43:    evaluation method.
   44:    XXX This probably has to go into a gcc related file.  */
   45: #define _Complex_I      (__extension__ 1.0iF)
   46: 
   47: /* Another more descriptive name is `I'.
   48:    XXX Once we have the imaginary support switch this to _Imaginary_I.  */
   49: #undef I
   50: #define I _Complex_I
   51: 
   52: /* The file <bits/cmathcalls.h> contains the prototypes for all the
   53:    actual math functions.  These macros are used for those prototypes,
   54:    so we can easily declare each function as both `name' and `__name',
   55:    and can declare the float versions `namef' and `__namef'.  */
   56: 
   57: #define __MATHCALL(function, args)      \
   58:   __MATHDECL (_Mdouble_complex_,function, args)
   59: #define __MATHDECL(type, function, args) \
   60:   __MATHDECL_1(type, function, args); \
   61:   __MATHDECL_1(type, __CONCAT(__,function), args)
   62: #define __MATHDECL_1(type, function, args) \
   63:   extern type __MATH_PRECNAME(function) args __THROW
   64: 
   65: #define _Mdouble_               double
   66: #define __MATH_PRECNAME(name)   name
   67: #include <bits/cmathcalls.h>
   68: #undef  _Mdouble_
   69: #undef  __MATH_PRECNAME
   70: 
   71: /* Now the float versions.  */
   72: #ifndef _Mfloat_
   73: # define _Mfloat_               float
   74: #endif
   75: #define _Mdouble_               _Mfloat_
   76: #ifdef __STDC__
   77: # define __MATH_PRECNAME(name)  name##f
   78: #else
   79: # define __MATH_PRECNAME(name)  name/**/f
   80: #endif
   81: #include <bits/cmathcalls.h>
   82: #undef  _Mdouble_
   83: #undef  __MATH_PRECNAME
   84: 
   85: /* And the long double versions.  It is non-critical to define them
   86:    here unconditionally since `long double' is required in ISO C99.  */
   87: #if (__STDC__ - 0 || __GNUC__ - 0) \
   88:     && (!defined __NO_LONG_DOUBLE_MATH || defined __LDBL_COMPAT)
   89: # ifdef __LDBL_COMPAT
   90: #  undef __MATHDECL_1
   91: #  define __MATHDECL_1(type, function, args) \
   92:   extern type __REDIRECT_NTH(__MATH_PRECNAME(function), args, function)
   93: # endif
   94: 
   95: # ifndef _Mlong_double_
   96: #  define _Mlong_double_        long double
   97: # endif
   98: # define _Mdouble_              _Mlong_double_
   99: # ifdef __STDC__
  100: #  define __MATH_PRECNAME(name) name##l
  101: # else
  102: #  define __MATH_PRECNAME(name) name/**/l
  103: # endif
  104: # include <bits/cmathcalls.h>
  105: #endif
  106: #undef  _Mdouble_
  107: #undef  __MATH_PRECNAME
  108: #undef  __MATHDECL_1
  109: #undef  __MATHDECL
  110: #undef  __MATHCALL
  111: 
  112: __END_DECLS
  113: 
  114: #endif /* complex.h */