ExpInfo.h

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/*
 * Expression Template Matrix Library
 *
 * Copyright (C) 2004 - 2006 Ricky Lung <mtlung@users.sourceforge.net>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#ifdef _MSC_VER
#pragma once
#endif  // _MSC_VER

#ifndef _EXMAT_EXPINFO_H
#define _EXMAT_EXPINFO_H

#include <iostream>
#include "ExpTmp.h"

namespace exmat {

template<class EXP>
class ExpInfo {
public:
    ExpInfo(const EXP& exp_) : exp(exp_) {}
private:
    const EXP& exp;
};

template<class EXP>
void printExpInfo(const EXP& exp) {
    using std::cout;
    using std::endl;

    enum {
        IsScalar = HasTagOf<EXP,ScalarTag>::RET,
        IsRowVec = (EXP::ROWS == 1),
        IsColVec = (EXP::COLS == 1),
        IsRowStatic = (EXP::ROWS > 0),
        IsColStatic = (EXP::COLS > 0),
        IsRowMajor = HasTagOf<EXP,RowMajorTag>::RET,
        IsColMajor = HasTagOf<EXP,ColMajorTag>::RET
    };

    typedef typename EXP::ErrChecker ErrChecker;
    cout << "Error checker: " << (
        ISSAMETYPE<ErrChecker, EmptyErrorChecker>::RET ? "EmptyErrorChecker" :
        ISSAMETYPE<ErrChecker, DefaultErrorChecker>::RET ? "DefaultErrorChecker" :
        "FullErrorChecker"
        )<< endl;
    if(IsRowVec) cout << "It's a row vector\n";
    else if(IsColVec) cout << "It's a column vector\n";
    cout << "Rows: " << (IsRowStatic ? "static, " : "dynamic, ") << exp.rows() << endl;
    cout << "Cols: " << (IsColStatic ? "static, " : "dynamic, ") << exp.cols() << endl;
    cout << "TNOP: " << EXP::TNOP << endl;

    if(IsRowMajor)
        cout << "It's row major\n";
    if(IsColMajor)
        cout << "It's row major\n";
//  cout << "Required temporaries: " <<
//      typeid(typename TmpAnalyser<EXP, ::Loki::NullType>::longest_list).name() << endl;
}

};


/************************************************/
// I/O operators
template<class EXP>
std::ostream& operator<<(std::ostream &os, const exmat::ExpInfo<EXP>& expinfo) {
    return os;
}

#endif  // _EXMAT_EXPINFO_H

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