#ifndef FIX_DIFFERENCE_SIGNALS_SIGN_05_02_07
#define FIX_DIFFERENCE_SIGNALS_SIGN_05_02_07
/**
    @file FixDiffSign.h
    @author Brian Magill
    @datecreated 05/02/2007

    $Date:$
    $Revision:$

    @copyright
     (©) Copyright 2006 by GATS Inc.
     11864 Canon Blvd., Suite 101, Newport News, VA 23606

     All Rights Reserved. No part of this software or publication may be
     reproduced, stored in a retrieval system, or transmitted, in any form
     or by any means, electronic, mechanical, photocopying, recording, or
     otherwise without the prior written permission of GATS Inc.

    @brief: Changes the sign of the H2O and NO difference signal 
    
    The sign of these difference signals is changed so taht it is the same 
    as the other differenece signals. 
        
*/
//----------------------------------------------------------------------
//
#include <valarray>
#include <vector>
#include "SOFIE_namespace.h"

class FixDiffSign
{

public:

    FixDiffSign(){ };

    ~FixDiffSign() { };        
 
///          
///     @param signals     - array of signals
///  
///     @brief Corrects signals for time shifts due to electronic filtering and MUXing
///                 
    void operator()(std::vector<std::valarray<double> > &signals) const
        {
        for(unsigned long i = SOFIE::O3_strong; i <= SOFIE::NO_diff; i++)
            {
            if (i == SOFIE::H2O_diff || i == SOFIE::NO_diff)
                signals[i] = -1.0*signals[i];        
            }        
        };

};        

#endif