// -*- 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 Library 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

 *  Library General Public License for more details.

 *

 *  You should have received a copy of the GNU Library General Public License

 *  along with this library; see the file COPYING.LIB.  If not, write to

 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 *  Boston, MA 02110-1301, USA.

 *

 */

#ifndef _KJS_OPERATIONS_H_

#define _KJS_OPERATIONS_H_

#include <math.h>

namespace KJS {

  class ExecState;

  class JSValue;

#if PLATFORM(DARWIN)

  inline bool isNaN(double d) { return isnan(d); }

  inline bool isInf(double d) { return isinf(d); }

  inline bool isPosInf(double d) { return isinf(d) && d > 0; }

  inline bool isNegInf(double d) { return isinf(d) && d < 0; }

#else

  IMPORT bool isNaN(double d);

  IMPORT bool isInf(double d);

  bool isPosInf(double d);

  bool isNegInf(double d);

#endif

  bool equal(ExecState *exec, JSValue *v1, JSValue *v2);

  bool strictEqual(ExecState *exec, JSValue *v1, JSValue *v2);

  /**

   * This operator performs an abstract relational comparison 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, JSValue *v1, JSValue *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.

   */

  JSValue *add(ExecState *exec, JSValue *v1, JSValue *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.

   */

  JSValue *mult(ExecState *exec, JSValue *v1, JSValue *v2, char oper);

}

#endif