Source: operations.h

# Source: operations.h |
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    // -*- c-basic-offset: 2 -*-
    /*
     *  This file is part of the KDE libraries
     *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
     *
     *  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 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; see the file COPYING.LIB.  If not, write to
     *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     *  Boston, MA 02111-1307, USA.
     *
     *  $Id: operations.h,v 1.12.2.1 2003/05/17 11:19:25 mueller Exp $
     */

    #ifndef _KJS_OPERATIONS_H_
    #define _KJS_OPERATIONS_H_

    #include "value.h"

    namespace KJS {

      class ExecState;

      /**
       * @return True if d is not a number (platform support required).
       */
      bool isNaN(double d);
      /**
       * @return True if d is infinite (platform support required).
       */
      bool isInf(double d);
      bool isPosInf(double d);
      bool isNegInf(double d);
      bool equal(ExecState *exec, const Value& v1, const Value& v2);
      bool strictEqual(ExecState *exec, const Value &v1, const Value &v2);
      /**
       * This operator performs an abstract relational comparision of the two
       * arguments that can be of arbitrary type. If possible, conversions to the
       * string or number type will take place before the comparison.
       *
       * @return 1 if v1 is "less-than" v2, 0 if the relation is "greater-than-or-
       * equal". -1 if the result is undefined.
       */
      int relation(ExecState *exec, const Value& v1, const Value& v2);
      int maxInt(int d1, int d2);
      int minInt(int d1, int d2);
      /**
       * Additive operator. Either performs an addition or substraction of v1
       * and v2.
       * @param oper '+' or '-' for an addition or substraction, respectively.
       * @return The result of the operation.
       */
      Value add(ExecState *exec, const Value &v1, const Value &v2, char oper);
      /**
       * Multiplicative operator. Either multiplies/divides v1 and v2 or
       * calculates the remainder from an division.
       * @param oper '*', '/' or '%' for a multiplication, division or
       * modulo operation.
       * @return The result of the operation.
       */
      Value mult(ExecState *exec, const Value &v1, const Value &v2, char oper);

    }

    #endif

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