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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <QtGlobal>
#include <math.h>
class tst_QNumeric: public QObject
{
Q_OBJECT
private slots:
void fuzzyCompare_data();
void fuzzyCompare();
void qNan();
};
void tst_QNumeric::fuzzyCompare_data()
{
QTest::addColumn<double>("val1");
QTest::addColumn<double>("val2");
QTest::addColumn<bool>("isEqual");
QTest::newRow("zero") << 0.0 << 0.0 << true;
QTest::newRow("ten") << 10.0 << 10.0 << true;
QTest::newRow("large") << 1000000000.0 << 1000000000.0 << true;
QTest::newRow("small") << 0.00000000001 << 0.00000000001 << true;
QTest::newRow("eps") << 10.000000000000001 << 10.00000000000002 << true;
QTest::newRow("eps2") << 10.000000000000001 << 10.000000000000009 << true;
QTest::newRow("mis1") << 0.0 << 1.0 << false;
QTest::newRow("mis2") << 0.0 << 10000000.0 << false;
QTest::newRow("mis3") << 0.0 << 0.000000001 << false;
QTest::newRow("mis4") << 100000000.0 << 0.000000001 << false;
QTest::newRow("mis4") << 0.0000000001 << 0.000000001 << false;
}
void tst_QNumeric::fuzzyCompare()
{
QFETCH(double, val1);
QFETCH(double, val2);
QFETCH(bool, isEqual);
QCOMPARE(::qFuzzyCompare(val1, val2), isEqual);
QCOMPARE(::qFuzzyCompare(val2, val1), isEqual);
QCOMPARE(::qFuzzyCompare(-val1, -val2), isEqual);
QCOMPARE(::qFuzzyCompare(-val2, -val1), isEqual);
}
void tst_QNumeric::qNan()
{
double nan = qQNaN();
#if defined( __INTEL_COMPILER)
QCOMPARE((0 > nan), false);
QCOMPARE((0 < nan), false);
QSKIP("This fails due to a bug in the Intel Compiler", SkipAll);
#else
if (0 > nan)
QFAIL("compiler thinks 0 > nan");
# if defined(Q_CC_DIAB)
QWARN("!(0 < nan) would fail due to a bug in dcc");
# else
if (0 < nan)
QFAIL("compiler thinks 0 < nan");
# endif
#endif
QVERIFY(qIsNaN(nan));
QVERIFY(qIsNaN(nan + 1));
QVERIFY(qIsNaN(-nan));
double inf = qInf();
QVERIFY(inf > 0);
QVERIFY(-inf < 0);
QVERIFY(qIsInf(inf));
QVERIFY(qIsInf(-inf));
QVERIFY(qIsInf(2*inf));
QCOMPARE(1/inf, 0.0);
QVERIFY(qIsNaN(0*nan));
QVERIFY(qIsNaN(0*inf));
QVERIFY(qFuzzyCompare(1/inf, 0.0));
}
QTEST_APPLESS_MAIN(tst_QNumeric)
#include "tst_qnumeric.moc"
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