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79 lines
2.7 KiB
79 lines
2.7 KiB
15 years ago
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/*
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* This file is part of the KDE libraries
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* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef _KJS_OPERATIONS_H_
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#define _KJS_OPERATIONS_H_
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#include "value.h"
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namespace KJS {
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class ExecState;
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/**
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* @return True if d is not a number (platform support required).
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*/
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bool isNaN(double d);
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/**
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* @return True if d is infinite (platform support required).
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*/
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bool isInf(double d);
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bool isPosInf(double d);
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bool isNegInf(double d);
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bool equal(ExecState *exec, const Value& v1, const Value& v2);
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bool strictEqual(ExecState *exec, const Value &v1, const Value &v2);
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/**
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* This operator performs an abstract relational comparison of the two
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* arguments that can be of arbitrary type. If possible, conversions to the
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* string or number type will take place before the comparison.
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*
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* @return 1 if v1 is "less-than" v2, 0 if the relation is "greater-than-or-
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* equal". -1 if the result is undefined.
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*/
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int relation(ExecState *exec, const Value& v1, const Value& v2);
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int maxInt(int d1, int d2);
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int minInt(int d1, int d2);
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/**
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* Additive operator. Either performs an addition or substraction of v1
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* and v2.
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* @param exec execution state.
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* @param v1 First operand.
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* @param v2 Second operand.
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* @param oper '+' or '-' for an addition or substraction, respectively.
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* @return The result of the operation.
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*/
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Value add(ExecState *exec, const Value &v1, const Value &v2, char oper);
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/**
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* Multiplicative operator. Either multiplies/divides v1 and v2 or
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* calculates the remainder from an division.
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* @param exec execution state.
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* @param v1 First operand.
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* @param v2 Second operand.
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* @param oper '*', '/' or '%' for a multiplication, division or
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* modulo operation.
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* @return The result of the operation.
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*/
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Value mult(ExecState *exec, const Value &v1, const Value &v2, char oper);
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}
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#endif
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