valentina/src/libs/qmuparser/qmuparser.h

/***************************************************************************************************
 **
 **  Original work Copyright (C) 2013 Ingo Berg
 **  Modified work Copyright 2014 Roman Telezhinsky <dismine@gmail.com>
 **
 **  Permission is hereby granted, free of charge, to any person obtaining a copy of this
 **  software and associated documentation files (the "Software"), to deal in the Software
 **  without restriction, including without limitation the rights to use, copy, modify,
 **  merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 **  permit persons to whom the Software is furnished to do so, subject to the following conditions:
 **
 **  The above copyright notice and this permission notice shall be included in all copies or
 **  substantial portions of the Software.
 **
 **  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
 **  NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 **  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 **  DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 **  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 **
 ******************************************************************************************************/

#ifndef QMUPARSER_H
#define QMUPARSER_H

#include "qmuparser_global.h"

//--- Parser includes --------------------------------------------------------------------------
#include "qmuparserbase.h"

/** \file
    \brief Definition of the standard floating point parser.
*/

namespace qmu
{
  /** \brief Mathematical expressions parser.

    Standard implementation of the mathematical expressions parser.
    Can be used as a reference implementation for subclassing the parser.

    <small>
    (C) 2011 Ingo Berg<br>
    muparser(at)gmx.de
    </small>
  */
/* final */ class QMUPARSERSHARED_EXPORT QmuParser : public QmuParserBase
{

public:
    QmuParser();
    virtual void InitCharSets();
    virtual void InitFun();
    virtual void InitConst();
    virtual void InitOprt();
    virtual void OnDetectVar(string_type *pExpr, int &nStart, int &nEnd);

    qreal Diff(qreal *a_Var, qreal a_fPos, qreal a_fEpsilon = 0) const;
protected:
    // Trigonometric functions
    static qreal  Tan2(qreal, qreal);
    // hyperbolic functions
    static qreal  Sinh(qreal);
    static qreal  Cosh(qreal);
    static qreal  Tanh(qreal);
    // arcus hyperbolic functions
    static qreal  ASinh(qreal);
    static qreal  ACosh(qreal);
    static qreal  ATanh(qreal);
    // Logarithm functions
    static qreal  Log2(qreal);  // Logarithm Base 2
    static qreal  Log10(qreal); // Logarithm Base 10
    // misc
    static qreal  Abs(qreal);
    static qreal  Rint(qreal);
    static qreal  Sign(qreal);
    // Prefix operators
    // !!! Unary Minus is a MUST if you want to use negative signs !!!
    static qreal  UnaryMinus(qreal);
    // Functions with variable number of arguments
    static qreal Sum(const qreal*, int);  // sum
    static qreal Avg(const qreal*, int);  // mean value
    static qreal Min(const qreal*, int);  // minimum
    static qreal Max(const qreal*, int);  // maximum

    static int IsVal(const char_type* a_szExpr, int *a_iPos, qreal *a_fVal);
};

} // namespace qmu

#endif // QMUPARSER_H