92 lines
3.6 KiB
C
92 lines
3.6 KiB
C
|
// The -*- C++ -*- double_complex class.
|
||
|
|
// Copyright (C) 1994 Free Software Foundation
|
||
|
|
|
||
|
|
// This file is part of the GNU ANSI C++ Library. This library is free
|
||
|
|
// software; you can redistribute it and/or modify it under the
|
||
|
|
// terms of the GNU General Public License as published by the
|
||
|
|
// Free Software Foundation; either version 2, or (at your option)
|
||
|
|
// any later version.
|
||
|
|
|
||
|
|
// This 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 General Public License for more details.
|
||
|
|
|
||
|
|
// You should have received a copy of the GNU General Public License
|
||
|
|
// along with this library; see the file COPYING. If not, write to the Free
|
||
|
|
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||
|
|
|
||
|
|
// As a special exception, if you link this library with files
|
||
|
|
// compiled with a GNU compiler to produce an executable, this does not cause
|
||
|
|
// the resulting executable to be covered by the GNU General Public License.
|
||
|
|
// This exception does not however invalidate any other reasons why
|
||
|
|
// the executable file might be covered by the GNU General Public License.
|
||
|
|
|
||
|
|
// Written by Jason Merrill based upon the specification in the 27 May 1994
|
||
|
|
// C++ working paper, ANSI document X3J16/94-0098.
|
||
|
|
|
||
|
|
#ifndef __DCOMPLEX__
|
||
|
|
#define __DCOMPLEX__
|
||
|
|
|
||
|
|
#ifdef __GNUG__
|
||
|
|
#pragma interface "dcomplex"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
extern "C++" {
|
||
|
|
class complex<double>
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
complex (double r = 0, double i = 0): re (r), im (i) { }
|
||
|
|
complex (const complex<float>& r): re (r.real ()), im (r.imag ()) { }
|
||
|
|
explicit complex (const complex<long double>& r);
|
||
|
|
|
||
|
|
complex& operator+= (const complex& r) { return __doapl (this, r); }
|
||
|
|
complex& operator-= (const complex& r) { return __doami (this, r); }
|
||
|
|
complex& operator*= (const complex& r) { return __doaml (this, r); }
|
||
|
|
complex& operator/= (const complex& r) { return __doadv (this, r); }
|
||
|
|
|
||
|
|
double real () const { return re; }
|
||
|
|
double imag () const { return im; }
|
||
|
|
private:
|
||
|
|
double re, im;
|
||
|
|
|
||
|
|
friend complex& __doapl<> (complex *, const complex&);
|
||
|
|
friend complex& __doami<> (complex *, const complex&);
|
||
|
|
friend complex& __doaml<> (complex *, const complex&);
|
||
|
|
friend complex& __doadv<> (complex *, const complex&);
|
||
|
|
|
||
|
|
#ifndef __STRICT_ANSI__
|
||
|
|
friend inline complex operator + (const complex& x, double y)
|
||
|
|
{ return operator+<> (x, y); }
|
||
|
|
friend inline complex operator + (double x, const complex& y)
|
||
|
|
{ return operator+<> (x, y); }
|
||
|
|
friend inline complex operator - (const complex& x, double y)
|
||
|
|
{ return operator-<> (x, y); }
|
||
|
|
friend inline complex operator - (double x, const complex& y)
|
||
|
|
{ return operator-<> (x, y); }
|
||
|
|
friend inline complex operator * (const complex& x, double y)
|
||
|
|
{ return operator*<> (x, y); }
|
||
|
|
friend inline complex operator * (double x, const complex& y)
|
||
|
|
{ return operator*<> (x, y); }
|
||
|
|
friend inline complex operator / (const complex& x, double y)
|
||
|
|
{ return operator/<> (x, y); }
|
||
|
|
friend inline complex operator / (double x, const complex& y)
|
||
|
|
{ return operator/<> (x, y); }
|
||
|
|
friend inline bool operator == (const complex& x, double y)
|
||
|
|
{ return operator==<> (x, y); }
|
||
|
|
friend inline bool operator == (double x, const complex& y)
|
||
|
|
{ return operator==<> (x, y); }
|
||
|
|
friend inline bool operator != (const complex& x, double y)
|
||
|
|
{ return operator!=<> (x, y); }
|
||
|
|
friend inline bool operator != (double x, const complex& y)
|
||
|
|
{ return operator!=<> (x, y); }
|
||
|
|
#endif /* __STRICT_ANSI__ */
|
||
|
|
};
|
||
|
|
|
||
|
|
inline complex<float>::complex (const complex<double>& r)
|
||
|
|
: re (r.real ()), im (r.imag ())
|
||
|
|
{ }
|
||
|
|
} // extern "C++"
|
||
|
|
|
||
|
|
#endif
|