125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtTest/QtTest>
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#include <QtGlobal>
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#include <math.h>
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class tst_QNumeric: public QObject
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{
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Q_OBJECT
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private slots:
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void fuzzyCompare_data();
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void fuzzyCompare();
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void qNan();
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};
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void tst_QNumeric::fuzzyCompare_data()
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{
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QTest::addColumn<double>("val1");
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QTest::addColumn<double>("val2");
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QTest::addColumn<bool>("isEqual");
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QTest::newRow("zero") << 0.0 << 0.0 << true;
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QTest::newRow("ten") << 10.0 << 10.0 << true;
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QTest::newRow("large") << 1000000000.0 << 1000000000.0 << true;
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QTest::newRow("small") << 0.00000000001 << 0.00000000001 << true;
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QTest::newRow("eps") << 10.000000000000001 << 10.00000000000002 << true;
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QTest::newRow("eps2") << 10.000000000000001 << 10.000000000000009 << true;
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QTest::newRow("mis1") << 0.0 << 1.0 << false;
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QTest::newRow("mis2") << 0.0 << 10000000.0 << false;
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QTest::newRow("mis3") << 0.0 << 0.000000001 << false;
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QTest::newRow("mis4") << 100000000.0 << 0.000000001 << false;
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QTest::newRow("mis4") << 0.0000000001 << 0.000000001 << false;
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}
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void tst_QNumeric::fuzzyCompare()
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{
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QFETCH(double, val1);
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QFETCH(double, val2);
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QFETCH(bool, isEqual);
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QCOMPARE(::qFuzzyCompare(val1, val2), isEqual);
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QCOMPARE(::qFuzzyCompare(val2, val1), isEqual);
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QCOMPARE(::qFuzzyCompare(-val1, -val2), isEqual);
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QCOMPARE(::qFuzzyCompare(-val2, -val1), isEqual);
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}
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void tst_QNumeric::qNan()
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{
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double nan = qQNaN();
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#if defined( __INTEL_COMPILER)
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QCOMPARE((0 > nan), false);
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QCOMPARE((0 < nan), false);
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QSKIP("This fails due to a bug in the Intel Compiler", SkipAll);
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#else
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if (0 > nan)
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QFAIL("compiler thinks 0 > nan");
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# if defined(Q_CC_DIAB)
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QWARN("!(0 < nan) would fail due to a bug in dcc");
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# else
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if (0 < nan)
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QFAIL("compiler thinks 0 < nan");
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# endif
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#endif
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QVERIFY(qIsNaN(nan));
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QVERIFY(qIsNaN(nan + 1));
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QVERIFY(qIsNaN(-nan));
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double inf = qInf();
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QVERIFY(inf > 0);
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QVERIFY(-inf < 0);
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QVERIFY(qIsInf(inf));
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QVERIFY(qIsInf(-inf));
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QVERIFY(qIsInf(2*inf));
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QCOMPARE(1/inf, 0.0);
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QVERIFY(qIsNaN(0*nan));
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QVERIFY(qIsNaN(0*inf));
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QVERIFY(qFuzzyCompare(1/inf, 0.0));
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}
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QTEST_APPLESS_MAIN(tst_QNumeric)
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#include "tst_qnumeric.moc"
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