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/*$Id: m_wave.h 2014/11/23$ -*- C++ -*-
* Copyright (C) 2001 Albert Davis
* Author: Albert Davis <aldavis@gnu.org>
*
* This file is part of "Gnucap", the Gnu Circuit Analysis Package
*
* This program 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 3, or (at your option)
* any later version.
*
* This program 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 program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*------------------------------------------------------------------
* "wave" class, for transmission lines and delays
*/
//testing=script 2006.07.13
#include "l_denoise.h"
#include "m_interp.h"
/*--------------------------------------------------------------------------*/
class WAVE {
private:
std::deque<DPAIR> _w;
double _delay;
public:
typedef std::deque<DPAIR>::iterator iterator;
typedef std::deque<DPAIR>::const_iterator const_iterator;
explicit WAVE(double d=0);
explicit WAVE(const WAVE&);
~WAVE() {}
WAVE& set_delay(double d);
WAVE& initialize();
WAVE& push(double t, double v);
FPOLY1 v_out(double t)const;
double v_reflect(double t, double v_total)const;
WAVE& operator+=(const WAVE& x);
WAVE& operator+=(double x);
WAVE& operator*=(const WAVE& x);
WAVE& operator*=(double x);
const_iterator begin()const {return _w.begin();}
const_iterator end()const {return _w.end();}
};
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
// push: insert a signal on the "input" end.
// args: t = the time now
// v = the value to push
//
inline WAVE& WAVE::push(double t, double v)
{
_w.push_back(DPAIR(t+_delay, v));
return *this;
}
/*--------------------------------------------------------------------------*/
// initialize: remove all info, fill it with all 0.
//
inline WAVE& WAVE::initialize()
{
_w.clear();
return *this;
}
/*--------------------------------------------------------------------------*/
inline WAVE::WAVE(const WAVE& w)
:_w(w._w),
_delay(w._delay)
{ untested();
}
/*--------------------------------------------------------------------------*/
// constructor -- argument is the delay
//
inline WAVE::WAVE(double d)
:_w(),
_delay(d)
{
initialize();
}
/*--------------------------------------------------------------------------*/
inline WAVE& WAVE::set_delay(double d)
{
_delay = d;
return *this;
}
/*--------------------------------------------------------------------------*/
// v_out: return the value at the "output" end
// args: t = the time now
//
inline FPOLY1 WAVE::v_out(double t)const
{
return interpolate(_w.begin(), _w.end(), t, 0., 0.);
}
/*--------------------------------------------------------------------------*/
// reflect: calculate a reflection
// args: t = the time now
// v_total = actual voltage across the termination
// returns: the value (voltage) to send back as the reflection
//
inline double WAVE::v_reflect(double t, double v_total)const
{
// return (v_total*2 - v_out(t)); // de-noised
return dn_diff(v_total*2, v_out(t).f0);
}
/*--------------------------------------------------------------------------*/
inline WAVE& WAVE::operator+=(const WAVE& x)
{
untested();
for (std::deque<DPAIR>::iterator
i = _w.begin(); i != _w.end(); ++i) {
untested();
(*i).second += x.v_out((*i).first).f0;
}
return *this;
}
/*--------------------------------------------------------------------------*/
inline WAVE& WAVE::operator+=(double x)
{
untested();
for (std::deque<DPAIR>::iterator
i = _w.begin(); i != _w.end(); ++i) {
untested();
(*i).second += x;
}
return *this;
}
/*--------------------------------------------------------------------------*/
inline WAVE& WAVE::operator*=(const WAVE& x)
{
untested();
for (std::deque<DPAIR>::iterator
i = _w.begin(); i != _w.end(); ++i) {
untested();
(*i).second *= x.v_out((*i).first).f0;
}
return *this;
}
/*--------------------------------------------------------------------------*/
inline WAVE& WAVE::operator*=(double x)
{
untested();
for (std::deque<DPAIR>::iterator
i = _w.begin(); i != _w.end(); ++i) {
untested();
(*i).second *= x;
}
return *this;
}
/*--------------------------------------------------------------------------*/
/*--------------------------------------------------------------------------*/
// vim:ts=8:sw=2:noet:
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