Parameter.cc

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// This file is a part of MinuitInterface - a front end for the Minuit minimization
//       package (Minuit itself was authored by Fred James, of CERN)
// 
// 
// Copyright Cornell University 1993, 1996, All Rights Reserved.
// 
// This software written by Lawrence Gibbons, Cornell University.
// 
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// modification, are permitted provided that the following conditions
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//    notice and author attribution, this list of conditions and the
//    following disclaimer. 
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//    following disclaimer in the documentation and/or other materials
//    provided with the distribution.
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//    may be used to endorse or promote products derived from this software
//    without specific prior written permission.
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//

#include <string>

#include "MinuitInterface/Parameter.h"

using namespace std;

Parameter::Parameter(  const string& name, double initialValue, double initialError ) :
m_name( name ),
m_value( initialValue ),
m_error( initialError )
{}

Parameter::~Parameter() {}

void
Parameter::setValue( double newValue ) {

  if( m_value != newValue ){

    // In practice the comparison above could probably "safely" be
    // done within some tolerance, but set to exact comparison for now.
    // This check avoids falsely notifying observers when the
    // parameter hasn't actually changed.
    
    m_value = newValue;
    notify();
  }
}

void
Parameter::setError( double newError, bool doNotify ) {
   m_error = newError;
   if ( doNotify ) notify();
}

void
Parameter::setValueError( double newValue, double newError ) {
   m_value = newValue;
   m_error = newError;
   notify();
}

const string&
Parameter::name() const {
   return m_name;
}