NumericalConstants.hh 1.6 KB
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/*
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 * Copyright (C) 2003-2011 Dynare Team
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 *
 * This file is part of Dynare.
 *
 * Dynare 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 of the License, or
 * (at your option) any later version.
 *
 * Dynare 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 Dynare.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _NUMERICALCONSTANTS_HH
#define _NUMERICALCONSTANTS_HH

using namespace std;

#include <string>
#include <vector>
#include <map>

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//! Handles non-negative numerical constants
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class NumericalConstants
{
private:
  //! Vector of numerical constants
  vector<string> mNumericalConstants;
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  //! Double values of these constants
  vector<double> double_vals;
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  //! Map matching constants to their id
  map<string, int> numConstantsIndex;
public:
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  class InvalidFloatingPointNumberException
  {
  public:
    const string fp;
    InvalidFloatingPointNumberException(const string &fp_arg) : fp(fp_arg) {}
  };

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  //! Adds a non-negative constant (possibly Inf or NaN) and returns its ID
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  int AddNonNegativeConstant(const string &iConst) throw (InvalidFloatingPointNumberException);
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  //! Get a constant in string form
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  string get(int ID) const;
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  //! Get a constant in double form
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  double getDouble(int ID) const;
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};

#endif