evaluator_impl.cc

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/libraries/libmbutil/evaluator_impl.cc,v 1.3 2017/01/12 14:44:04 masarati Exp $ */
/*
 * MBDyn (C) is a multibody analysis code.
 * http://www.mbdyn.org
 *
 * Copyright (C) 1996-2017
 *
 * Pierangelo Masarati  <masarati@aero.polimi.it>
 * Paolo Mantegazza     <mantegazza@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 *
 * 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 (version 2 of the License).
 *
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/*
 * With the contribution of Ankit Aggarwal <ankit.ankit.aggarwal@gmail.com>
 * during Google Summer of Code 2015
 */

#include "mbconfig.h"           /* This goes first in every *.c,*.cc file */

#include <cerrno>
#include <cfloat>
#include <cstdlib>
#include <climits>
#include <limits>
#include <sstream>

#include "mathp.h"
#include "parser.h"

#ifdef USE_EE

#include "evaluator_impl.h"

unsigned ExpressionElement::m_uEEFlags = ExpressionElement::EE_OPTIMIZE;

std::string
EEStrOut(const ExpressionElement *e)
{
        std::ostringstream out;
        e->Output(out);
        return out.str();
}

bool
EE_Eval(TypedValue& dst, const ExpressionElement *ee)
{
        if (ee == 0) {
                return false;
        }

        dst = ee->Eval();

        return true;
}

bool
EE_Eval(bool& dst, const ExpressionElement *ee)
{
        if (ee == 0) {
                return false;
        }

        dst = ee->Eval().GetBool();

        return true;
}

bool
EE_Eval(Int& dst, const ExpressionElement *ee)
{
        if (ee == 0) {
                return false;
        }

        dst = ee->Eval().GetInt();

        return true;
}

bool
EE_Eval(Real& dst, const ExpressionElement *ee)
{
        if (ee == 0) {
                return false;
        }

        dst = ee->Eval().GetReal();

        return true;
}

bool
EE_Eval(std::string& dst, const ExpressionElement *ee)
{
        if (ee == 0) {
                return false;
        }

        dst = ee->Eval().GetString();

        return true;
}

#endif // USE_EE