442c0874ea
2003-03-21 Jerry Quinn <jlquinn@optonline.net>
PR libstdc++/5730
* include/bits/c++config (_GLIBCPP_FAST_MATH): Define.
* include/std/std_complex.h (norm): Use faster,
less accurate computation for builtin float types under --fast-math.
From-SVN: r64701
1060 lines
28 KiB
C++
1060 lines
28 KiB
C++
// The template and inlines for the -*- C++ -*- complex number classes.
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
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// Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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//
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// ISO C++ 14882: 26.2 Complex Numbers
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// Note: this is not a conforming implementation.
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// Initially implemented by Ulrich Drepper <drepper@cygnus.com>
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// Improved by Gabriel Dos Reis <dosreis@cmla.ens-cachan.fr>
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//
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/** @file complex
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* This is a Standard C++ Library header. You should @c #include this header
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* in your programs, rather than any of the "st[dl]_*.h" implementation files.
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*/
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#ifndef _CPP_COMPLEX
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#define _CPP_COMPLEX 1
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#pragma GCC system_header
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#include <bits/c++config.h>
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#include <bits/cpp_type_traits.h>
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#include <cmath>
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#include <sstream>
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namespace std
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{
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// Forward declarations
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template<typename _Tp> class complex;
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template<> class complex<float>;
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template<> class complex<double>;
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template<> class complex<long double>;
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template<typename _Tp> _Tp abs(const complex<_Tp>&);
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template<typename _Tp> _Tp arg(const complex<_Tp>&);
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template<typename _Tp> _Tp norm(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> conj(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> polar(const _Tp&, const _Tp& = 0);
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// Transcendentals:
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template<typename _Tp> complex<_Tp> cos(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> cosh(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> exp(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> log(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> log10(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> pow(const complex<_Tp>&, int);
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template<typename _Tp> complex<_Tp> pow(const complex<_Tp>&, const _Tp&);
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template<typename _Tp> complex<_Tp> pow(const complex<_Tp>&,
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const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> pow(const _Tp&, const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> sin(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> sinh(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> sqrt(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> tan(const complex<_Tp>&);
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template<typename _Tp> complex<_Tp> tanh(const complex<_Tp>&);
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// 26.2.2 Primary template class complex
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template<typename _Tp>
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class complex
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{
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public:
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typedef _Tp value_type;
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complex(const _Tp& = _Tp(), const _Tp & = _Tp());
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// Let's the compiler synthetize the copy constructor
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// complex (const complex<_Tp>&);
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template<typename _Up>
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complex(const complex<_Up>&);
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_Tp real() const;
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_Tp imag() const;
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complex<_Tp>& operator=(const _Tp&);
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complex<_Tp>& operator+=(const _Tp&);
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complex<_Tp>& operator-=(const _Tp&);
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complex<_Tp>& operator*=(const _Tp&);
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complex<_Tp>& operator/=(const _Tp&);
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// Let's the compiler synthetize the
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// copy and assignment operator
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// complex<_Tp>& operator= (const complex<_Tp>&);
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template<typename _Up>
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complex<_Tp>& operator=(const complex<_Up>&);
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template<typename _Up>
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complex<_Tp>& operator+=(const complex<_Up>&);
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template<typename _Up>
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complex<_Tp>& operator-=(const complex<_Up>&);
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template<typename _Up>
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complex<_Tp>& operator*=(const complex<_Up>&);
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template<typename _Up>
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complex<_Tp>& operator/=(const complex<_Up>&);
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private:
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_Tp _M_real, _M_imag;
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};
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template<typename _Tp>
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inline _Tp
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complex<_Tp>::real() const { return _M_real; }
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template<typename _Tp>
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inline _Tp
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complex<_Tp>::imag() const { return _M_imag; }
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template<typename _Tp>
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inline
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complex<_Tp>::complex(const _Tp& __r, const _Tp& __i)
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: _M_real(__r), _M_imag(__i) { }
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template<typename _Tp>
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template<typename _Up>
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inline
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complex<_Tp>::complex(const complex<_Up>& __z)
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: _M_real(__z.real()), _M_imag(__z.imag()) { }
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template<typename _Tp>
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complex<_Tp>&
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complex<_Tp>::operator=(const _Tp& __t)
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{
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_M_real = __t;
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_M_imag = _Tp();
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return *this;
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}
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// 26.2.5/1
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template<typename _Tp>
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inline complex<_Tp>&
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complex<_Tp>::operator+=(const _Tp& __t)
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{
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_M_real += __t;
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return *this;
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}
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// 26.2.5/3
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template<typename _Tp>
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inline complex<_Tp>&
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complex<_Tp>::operator-=(const _Tp& __t)
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{
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_M_real -= __t;
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return *this;
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}
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// 26.2.5/5
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template<typename _Tp>
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complex<_Tp>&
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complex<_Tp>::operator*=(const _Tp& __t)
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{
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_M_real *= __t;
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_M_imag *= __t;
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return *this;
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}
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// 26.2.5/7
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template<typename _Tp>
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complex<_Tp>&
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complex<_Tp>::operator/=(const _Tp& __t)
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{
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_M_real /= __t;
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_M_imag /= __t;
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return *this;
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}
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template<typename _Tp>
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template<typename _Up>
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complex<_Tp>&
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complex<_Tp>::operator=(const complex<_Up>& __z)
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{
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_M_real = __z.real();
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_M_imag = __z.imag();
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return *this;
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}
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// 26.2.5/9
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template<typename _Tp>
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template<typename _Up>
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complex<_Tp>&
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complex<_Tp>::operator+=(const complex<_Up>& __z)
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{
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_M_real += __z.real();
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_M_imag += __z.imag();
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return *this;
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}
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// 26.2.5/11
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template<typename _Tp>
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template<typename _Up>
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complex<_Tp>&
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complex<_Tp>::operator-=(const complex<_Up>& __z)
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{
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_M_real -= __z.real();
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_M_imag -= __z.imag();
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return *this;
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}
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// 26.2.5/13
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// XXX: This is a grammar school implementation.
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template<typename _Tp>
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template<typename _Up>
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complex<_Tp>&
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complex<_Tp>::operator*=(const complex<_Up>& __z)
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{
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const _Tp __r = _M_real * __z.real() - _M_imag * __z.imag();
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_M_imag = _M_real * __z.imag() + _M_imag * __z.real();
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_M_real = __r;
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return *this;
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}
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// 26.2.5/15
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// XXX: This is a grammar school implementation.
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template<typename _Tp>
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template<typename _Up>
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complex<_Tp>&
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complex<_Tp>::operator/=(const complex<_Up>& __z)
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{
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const _Tp __r = _M_real * __z.real() + _M_imag * __z.imag();
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const _Tp __n = norm(__z);
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_M_imag = (_M_imag * __z.real() - _M_real * __z.imag()) / __n;
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_M_real = __r / __n;
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return *this;
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}
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// Operators:
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template<typename _Tp>
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inline complex<_Tp>
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operator+(const complex<_Tp>& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__x) += __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator+(const complex<_Tp>& __x, const _Tp& __y)
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{ return complex<_Tp> (__x) += __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator+(const _Tp& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__y) += __x; }
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template<typename _Tp>
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inline complex<_Tp>
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operator-(const complex<_Tp>& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__x) -= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator-(const complex<_Tp>& __x, const _Tp& __y)
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{ return complex<_Tp> (__x) -= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator-(const _Tp& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__x) -= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator*(const complex<_Tp>& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__x) *= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator*(const complex<_Tp>& __x, const _Tp& __y)
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{ return complex<_Tp> (__x) *= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator*(const _Tp& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__y) *= __x; }
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template<typename _Tp>
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inline complex<_Tp>
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operator/(const complex<_Tp>& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__x) /= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator/(const complex<_Tp>& __x, const _Tp& __y)
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{ return complex<_Tp> (__x) /= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator/(const _Tp& __x, const complex<_Tp>& __y)
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{ return complex<_Tp> (__x) /= __y; }
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template<typename _Tp>
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inline complex<_Tp>
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operator+(const complex<_Tp>& __x)
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{ return __x; }
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template<typename _Tp>
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inline complex<_Tp>
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operator-(const complex<_Tp>& __x)
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{ return complex<_Tp>(-__x.real(), -__x.imag()); }
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template<typename _Tp>
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inline bool
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operator==(const complex<_Tp>& __x, const complex<_Tp>& __y)
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{ return __x.real() == __y.real() && __x.imag() == __y.imag(); }
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template<typename _Tp>
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inline bool
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operator==(const complex<_Tp>& __x, const _Tp& __y)
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{ return __x.real() == __y && __x.imag() == _Tp(); }
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template<typename _Tp>
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inline bool
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operator==(const _Tp& __x, const complex<_Tp>& __y)
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{ return __x == __y.real() && _Tp() == __y.imag(); }
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template<typename _Tp>
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inline bool
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operator!=(const complex<_Tp>& __x, const complex<_Tp>& __y)
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{ return __x.real() != __y.real() || __x.imag() != __y.imag(); }
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template<typename _Tp>
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inline bool
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operator!=(const complex<_Tp>& __x, const _Tp& __y)
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{ return __x.real() != __y || __x.imag() != _Tp(); }
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template<typename _Tp>
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inline bool
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operator!=(const _Tp& __x, const complex<_Tp>& __y)
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{ return __x != __y.real() || _Tp() != __y.imag(); }
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template<typename _Tp, typename _CharT, class _Traits>
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basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, complex<_Tp>& __x)
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{
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_Tp __re_x, __im_x;
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_CharT __ch;
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__is >> __ch;
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if (__ch == '(')
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{
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__is >> __re_x >> __ch;
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if (__ch == ',')
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{
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__is >> __im_x >> __ch;
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if (__ch == ')')
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__x = complex<_Tp>(__re_x, __im_x);
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else
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__is.setstate(ios_base::failbit);
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}
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else if (__ch == ')')
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__x = complex<_Tp>(__re_x, _Tp(0));
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else
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__is.setstate(ios_base::failbit);
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}
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else
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{
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__is.putback(__ch);
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__is >> __re_x;
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__x = complex<_Tp>(__re_x, _Tp(0));
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}
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return __is;
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}
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template<typename _Tp, typename _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, const complex<_Tp>& __x)
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{
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basic_ostringstream<_CharT, _Traits> __s;
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__s.flags(__os.flags());
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__s.imbue(__os.getloc());
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__s.precision(__os.precision());
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__s << '(' << __x.real() << ',' << __x.imag() << ')';
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return __os << __s.str();
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}
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// Values
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template<typename _Tp>
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inline _Tp
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real(const complex<_Tp>& __z)
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{ return __z.real(); }
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template<typename _Tp>
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inline _Tp
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imag(const complex<_Tp>& __z)
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{ return __z.imag(); }
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template<typename _Tp>
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inline _Tp
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abs(const complex<_Tp>& __z)
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{
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_Tp __x = __z.real();
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_Tp __y = __z.imag();
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const _Tp __s = std::max(abs(__x), abs(__y));
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if (__s == _Tp()) // well ...
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return __s;
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__x /= __s;
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__y /= __s;
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return __s * sqrt(__x * __x + __y * __y);
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}
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template<typename _Tp>
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inline _Tp
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arg(const complex<_Tp>& __z)
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{ return atan2(__z.imag(), __z.real()); }
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// 26.2.7/5: norm(__z) returns the squared magintude of __z.
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// As defined, norm() is -not- a norm is the common mathematical
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// sens used in numerics. The helper class _Norm_helper<> tries to
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// distinguish between builtin floating point and the rest, so as
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// to deliver an answer as close as possible to the real value.
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template<bool>
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struct _Norm_helper
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{
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template<typename _Tp>
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static inline _Tp _S_do_it(const complex<_Tp>& __z)
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{
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const _Tp __x = __z.real();
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const _Tp __y = __z.imag();
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return __x * __x + __y * __y;
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}
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};
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template<>
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struct _Norm_helper<true>
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{
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template<typename _Tp>
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static inline _Tp _S_do_it(const complex<_Tp>& __z)
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{
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_Tp __res = abs(__z);
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return __res * __res;
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}
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};
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template<typename _Tp>
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inline _Tp
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norm(const complex<_Tp>& __z)
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{
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return _Norm_helper<__is_floating<_Tp>::_M_type && !_GLIBCPP_FAST_MATH>::_S_do_it(__z);
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}
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template<typename _Tp>
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inline complex<_Tp>
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polar(const _Tp& __rho, const _Tp& __theta)
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{ return complex<_Tp>(__rho * cos(__theta), __rho * sin(__theta)); }
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template<typename _Tp>
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inline complex<_Tp>
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conj(const complex<_Tp>& __z)
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{ return complex<_Tp>(__z.real(), -__z.imag()); }
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// Transcendentals
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template<typename _Tp>
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inline complex<_Tp>
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cos(const complex<_Tp>& __z)
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{
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const _Tp __x = __z.real();
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const _Tp __y = __z.imag();
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return complex<_Tp>(cos(__x) * cosh(__y), -sin(__x) * sinh(__y));
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}
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template<typename _Tp>
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inline complex<_Tp>
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cosh(const complex<_Tp>& __z)
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{
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const _Tp __x = __z.real();
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const _Tp __y = __z.imag();
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return complex<_Tp>(cosh(__x) * cos(__y), sinh(__x) * sin(__y));
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}
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template<typename _Tp>
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inline complex<_Tp>
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exp(const complex<_Tp>& __z)
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{ return polar(exp(__z.real()), __z.imag()); }
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template<typename _Tp>
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inline complex<_Tp>
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log(const complex<_Tp>& __z)
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{ return complex<_Tp>(log(abs(__z)), arg(__z)); }
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template<typename _Tp>
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inline complex<_Tp>
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log10(const complex<_Tp>& __z)
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{ return log(__z) / log(_Tp(10.0)); }
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template<typename _Tp>
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inline complex<_Tp>
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sin(const complex<_Tp>& __z)
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{
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const _Tp __x = __z.real();
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const _Tp __y = __z.imag();
|
|
return complex<_Tp>(sin(__x) * cosh(__y), cos(__x) * sinh(__y));
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<_Tp>
|
|
sinh(const complex<_Tp>& __z)
|
|
{
|
|
const _Tp __x = __z.real();
|
|
const _Tp __y = __z.imag();
|
|
return complex<_Tp>(sinh(__x) * cos(__y), cosh(__x) * sin(__y));
|
|
}
|
|
|
|
template<typename _Tp>
|
|
complex<_Tp>
|
|
sqrt(const complex<_Tp>& __z)
|
|
{
|
|
_Tp __x = __z.real();
|
|
_Tp __y = __z.imag();
|
|
|
|
if (__x == _Tp())
|
|
{
|
|
_Tp __t = sqrt(abs(__y) / 2);
|
|
return complex<_Tp>(__t, __y < _Tp() ? -__t : __t);
|
|
}
|
|
else
|
|
{
|
|
_Tp __t = sqrt(2 * (abs(__z) + abs(__x)));
|
|
_Tp __u = __t / 2;
|
|
return __x > _Tp()
|
|
? complex<_Tp>(__u, __y / __t)
|
|
: complex<_Tp>(abs(__y) / __t, __y < _Tp() ? -__u : __u);
|
|
}
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<_Tp>
|
|
tan(const complex<_Tp>& __z)
|
|
{
|
|
return sin(__z) / cos(__z);
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<_Tp>
|
|
tanh(const complex<_Tp>& __z)
|
|
{
|
|
return sinh(__z) / cosh(__z);
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<_Tp>
|
|
pow(const complex<_Tp>& __z, int __n)
|
|
{
|
|
return __pow_helper(__z, __n);
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<_Tp>
|
|
pow(const complex<_Tp>& __x, const _Tp& __y)
|
|
{
|
|
return exp(__y * log(__x));
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<_Tp>
|
|
pow(const complex<_Tp>& __x, const complex<_Tp>& __y)
|
|
{
|
|
return exp(__y * log(__x));
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<_Tp>
|
|
pow(const _Tp& __x, const complex<_Tp>& __y)
|
|
{
|
|
return exp(__y * log(__x));
|
|
}
|
|
|
|
// 26.2.3 complex specializations
|
|
// complex<float> specialization
|
|
template<> class complex<float>
|
|
{
|
|
public:
|
|
typedef float value_type;
|
|
|
|
complex(float = 0.0f, float = 0.0f);
|
|
#ifdef _GLIBCPP_BUGGY_COMPLEX
|
|
complex(const complex& __z) : _M_value(__z._M_value) { }
|
|
#endif
|
|
explicit complex(const complex<double>&);
|
|
explicit complex(const complex<long double>&);
|
|
|
|
float real() const;
|
|
float imag() const;
|
|
|
|
complex<float>& operator=(float);
|
|
complex<float>& operator+=(float);
|
|
complex<float>& operator-=(float);
|
|
complex<float>& operator*=(float);
|
|
complex<float>& operator/=(float);
|
|
|
|
// Let's the compiler synthetize the copy and assignment
|
|
// operator. It always does a pretty good job.
|
|
// complex& operator= (const complex&);
|
|
template<typename _Tp>
|
|
complex<float>&operator=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<float>& operator+=(const complex<_Tp>&);
|
|
template<class _Tp>
|
|
complex<float>& operator-=(const complex<_Tp>&);
|
|
template<class _Tp>
|
|
complex<float>& operator*=(const complex<_Tp>&);
|
|
template<class _Tp>
|
|
complex<float>&operator/=(const complex<_Tp>&);
|
|
|
|
private:
|
|
typedef __complex__ float _ComplexT;
|
|
_ComplexT _M_value;
|
|
|
|
complex(_ComplexT __z) : _M_value(__z) { }
|
|
|
|
friend class complex<double>;
|
|
friend class complex<long double>;
|
|
};
|
|
|
|
inline float
|
|
complex<float>::real() const
|
|
{ return __real__ _M_value; }
|
|
|
|
inline float
|
|
complex<float>::imag() const
|
|
{ return __imag__ _M_value; }
|
|
|
|
inline
|
|
complex<float>::complex(float r, float i)
|
|
{
|
|
__real__ _M_value = r;
|
|
__imag__ _M_value = i;
|
|
}
|
|
|
|
inline complex<float>&
|
|
complex<float>::operator=(float __f)
|
|
{
|
|
__real__ _M_value = __f;
|
|
__imag__ _M_value = 0.0f;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<float>&
|
|
complex<float>::operator+=(float __f)
|
|
{
|
|
__real__ _M_value += __f;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<float>&
|
|
complex<float>::operator-=(float __f)
|
|
{
|
|
__real__ _M_value -= __f;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<float>&
|
|
complex<float>::operator*=(float __f)
|
|
{
|
|
_M_value *= __f;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<float>&
|
|
complex<float>::operator/=(float __f)
|
|
{
|
|
_M_value /= __f;
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<float>&
|
|
complex<float>::operator=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value = __z.real();
|
|
__imag__ _M_value = __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<float>&
|
|
complex<float>::operator+=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value += __z.real();
|
|
__imag__ _M_value += __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<float>&
|
|
complex<float>::operator-=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value -= __z.real();
|
|
__imag__ _M_value -= __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<float>&
|
|
complex<float>::operator*=(const complex<_Tp>& __z)
|
|
{
|
|
_ComplexT __t;
|
|
__real__ __t = __z.real();
|
|
__imag__ __t = __z.imag();
|
|
_M_value *= __t;
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<float>&
|
|
complex<float>::operator/=(const complex<_Tp>& __z)
|
|
{
|
|
_ComplexT __t;
|
|
__real__ __t = __z.real();
|
|
__imag__ __t = __z.imag();
|
|
_M_value /= __t;
|
|
return *this;
|
|
}
|
|
|
|
// 26.2.3 complex specializations
|
|
// complex<double> specialization
|
|
template<> class complex<double>
|
|
{
|
|
public:
|
|
typedef double value_type;
|
|
|
|
complex(double =0.0, double =0.0);
|
|
#ifdef _GLIBCPP_BUGGY_COMPLEX
|
|
complex(const complex& __z) : _M_value(__z._M_value) { }
|
|
#endif
|
|
complex(const complex<float>&);
|
|
explicit complex(const complex<long double>&);
|
|
|
|
double real() const;
|
|
double imag() const;
|
|
|
|
complex<double>& operator=(double);
|
|
complex<double>& operator+=(double);
|
|
complex<double>& operator-=(double);
|
|
complex<double>& operator*=(double);
|
|
complex<double>& operator/=(double);
|
|
|
|
// The compiler will synthetize this, efficiently.
|
|
// complex& operator= (const complex&);
|
|
template<typename _Tp>
|
|
complex<double>& operator=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<double>& operator+=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<double>& operator-=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<double>& operator*=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<double>& operator/=(const complex<_Tp>&);
|
|
|
|
private:
|
|
typedef __complex__ double _ComplexT;
|
|
_ComplexT _M_value;
|
|
|
|
complex(_ComplexT __z) : _M_value(__z) { }
|
|
|
|
friend class complex<float>;
|
|
friend class complex<long double>;
|
|
};
|
|
|
|
inline double
|
|
complex<double>::real() const
|
|
{ return __real__ _M_value; }
|
|
|
|
inline double
|
|
complex<double>::imag() const
|
|
{ return __imag__ _M_value; }
|
|
|
|
inline
|
|
complex<double>::complex(double __r, double __i)
|
|
{
|
|
__real__ _M_value = __r;
|
|
__imag__ _M_value = __i;
|
|
}
|
|
|
|
inline complex<double>&
|
|
complex<double>::operator=(double __d)
|
|
{
|
|
__real__ _M_value = __d;
|
|
__imag__ _M_value = 0.0;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<double>&
|
|
complex<double>::operator+=(double __d)
|
|
{
|
|
__real__ _M_value += __d;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<double>&
|
|
complex<double>::operator-=(double __d)
|
|
{
|
|
__real__ _M_value -= __d;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<double>&
|
|
complex<double>::operator*=(double __d)
|
|
{
|
|
_M_value *= __d;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<double>&
|
|
complex<double>::operator/=(double __d)
|
|
{
|
|
_M_value /= __d;
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<double>&
|
|
complex<double>::operator=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value = __z.real();
|
|
__imag__ _M_value = __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<double>&
|
|
complex<double>::operator+=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value += __z.real();
|
|
__imag__ _M_value += __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<double>&
|
|
complex<double>::operator-=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value -= __z.real();
|
|
__imag__ _M_value -= __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<double>&
|
|
complex<double>::operator*=(const complex<_Tp>& __z)
|
|
{
|
|
_ComplexT __t;
|
|
__real__ __t = __z.real();
|
|
__imag__ __t = __z.imag();
|
|
_M_value *= __t;
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<double>&
|
|
complex<double>::operator/=(const complex<_Tp>& __z)
|
|
{
|
|
_ComplexT __t;
|
|
__real__ __t = __z.real();
|
|
__imag__ __t = __z.imag();
|
|
_M_value /= __t;
|
|
return *this;
|
|
}
|
|
|
|
// 26.2.3 complex specializations
|
|
// complex<long double> specialization
|
|
template<> class complex<long double>
|
|
{
|
|
public:
|
|
typedef long double value_type;
|
|
|
|
complex(long double = 0.0L, long double = 0.0L);
|
|
#ifdef _GLIBCPP_BUGGY_COMPLEX
|
|
complex(const complex& __z) : _M_value(__z._M_value) { }
|
|
#endif
|
|
complex(const complex<float>&);
|
|
complex(const complex<double>&);
|
|
|
|
long double real() const;
|
|
long double imag() const;
|
|
|
|
complex<long double>& operator= (long double);
|
|
complex<long double>& operator+= (long double);
|
|
complex<long double>& operator-= (long double);
|
|
complex<long double>& operator*= (long double);
|
|
complex<long double>& operator/= (long double);
|
|
|
|
// The compiler knows how to do this efficiently
|
|
// complex& operator= (const complex&);
|
|
template<typename _Tp>
|
|
complex<long double>& operator=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<long double>& operator+=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<long double>& operator-=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<long double>& operator*=(const complex<_Tp>&);
|
|
template<typename _Tp>
|
|
complex<long double>& operator/=(const complex<_Tp>&);
|
|
|
|
private:
|
|
typedef __complex__ long double _ComplexT;
|
|
_ComplexT _M_value;
|
|
|
|
complex(_ComplexT __z) : _M_value(__z) { }
|
|
|
|
friend class complex<float>;
|
|
friend class complex<double>;
|
|
};
|
|
|
|
inline
|
|
complex<long double>::complex(long double __r, long double __i)
|
|
{
|
|
__real__ _M_value = __r;
|
|
__imag__ _M_value = __i;
|
|
}
|
|
|
|
inline long double
|
|
complex<long double>::real() const
|
|
{ return __real__ _M_value; }
|
|
|
|
inline long double
|
|
complex<long double>::imag() const
|
|
{ return __imag__ _M_value; }
|
|
|
|
inline complex<long double>&
|
|
complex<long double>::operator=(long double __r)
|
|
{
|
|
__real__ _M_value = __r;
|
|
__imag__ _M_value = 0.0L;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<long double>&
|
|
complex<long double>::operator+=(long double __r)
|
|
{
|
|
__real__ _M_value += __r;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<long double>&
|
|
complex<long double>::operator-=(long double __r)
|
|
{
|
|
__real__ _M_value -= __r;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<long double>&
|
|
complex<long double>::operator*=(long double __r)
|
|
{
|
|
_M_value *= __r;
|
|
return *this;
|
|
}
|
|
|
|
inline complex<long double>&
|
|
complex<long double>::operator/=(long double __r)
|
|
{
|
|
_M_value /= __r;
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<long double>&
|
|
complex<long double>::operator=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value = __z.real();
|
|
__imag__ _M_value = __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<long double>&
|
|
complex<long double>::operator+=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value += __z.real();
|
|
__imag__ _M_value += __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<long double>&
|
|
complex<long double>::operator-=(const complex<_Tp>& __z)
|
|
{
|
|
__real__ _M_value -= __z.real();
|
|
__imag__ _M_value -= __z.imag();
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<long double>&
|
|
complex<long double>::operator*=(const complex<_Tp>& __z)
|
|
{
|
|
_ComplexT __t;
|
|
__real__ __t = __z.real();
|
|
__imag__ __t = __z.imag();
|
|
_M_value *= __t;
|
|
return *this;
|
|
}
|
|
|
|
template<typename _Tp>
|
|
inline complex<long double>&
|
|
complex<long double>::operator/=(const complex<_Tp>& __z)
|
|
{
|
|
_ComplexT __t;
|
|
__real__ __t = __z.real();
|
|
__imag__ __t = __z.imag();
|
|
_M_value /= __t;
|
|
return *this;
|
|
}
|
|
|
|
// These bits have to be at the end of this file, so that the
|
|
// specializations have all been defined.
|
|
// ??? No, they have to be there because of compiler limitation at
|
|
// inlining. It suffices that class specializations be defined.
|
|
inline
|
|
complex<float>::complex(const complex<double>& __z)
|
|
: _M_value(_ComplexT(__z._M_value)) { }
|
|
|
|
inline
|
|
complex<float>::complex(const complex<long double>& __z)
|
|
: _M_value(_ComplexT(__z._M_value)) { }
|
|
|
|
inline
|
|
complex<double>::complex(const complex<float>& __z)
|
|
: _M_value(_ComplexT(__z._M_value)) { }
|
|
|
|
inline
|
|
complex<double>::complex(const complex<long double>& __z)
|
|
{
|
|
__real__ _M_value = __z.real();
|
|
__imag__ _M_value = __z.imag();
|
|
}
|
|
|
|
inline
|
|
complex<long double>::complex(const complex<float>& __z)
|
|
: _M_value(_ComplexT(__z._M_value)) { }
|
|
|
|
inline
|
|
complex<long double>::complex(const complex<double>& __z)
|
|
: _M_value(_ComplexT(__z._M_value)) { }
|
|
} // namespace std
|
|
|
|
#endif /* _CPP_COMPLEX */
|