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diff --git a/kjs/operations.h b/kjs/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 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 "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 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, 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 exec execution state.
+   * @param v1 First operand.
+   * @param v2 Second operand.
+   * @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 exec execution state.
+   * @param v1 First operand.
+   * @param v2 Second operand.
+   * @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