114 lines
3.2 KiB
C++
114 lines
3.2 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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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** 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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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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 <QtCore>
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#include <QtTest/QtTest>
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#include <QDebug>
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class tst_float: public QObject
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{
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Q_OBJECT
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private slots:
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void floatComparisons() const;
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void floatComparisons_data() const;
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void compareFloatTests() const;
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void compareFloatTests_data() const;
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};
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void tst_float::floatComparisons() const
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{
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QFETCH(float, operandLeft);
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QFETCH(float, operandRight);
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QCOMPARE(operandLeft, operandRight);
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}
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void tst_float::floatComparisons_data() const
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{
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QTest::addColumn<float>("operandLeft");
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QTest::addColumn<float>("operandRight");
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QTest::newRow("should SUCCEED")
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<< float(0)
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<< float(0);
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QTest::newRow("should FAIL")
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<< float(1.00000)
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<< float(3.00000);
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QTest::newRow("should FAIL")
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<< float(1.00000e-7f)
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<< float(3.00000e-7f);
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QTest::newRow("should FAIL")
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<< float(100001)
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<< float(100002);
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}
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void tst_float::compareFloatTests() const
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{
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QFETCH(float, t1);
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// Create two more values
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// t2 differs from t1 by 1 ppm (part per million)
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// t3 differs from t1 by 200%
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// we should consider that t1 == t2 and t1 != t3
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const float t2 = t1 + (t1 / 1e6);
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const float t3 = 3 * t1;
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QCOMPARE(t1, t2);
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/* Should FAIL. */
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QCOMPARE(t1, t3);
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}
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void tst_float::compareFloatTests_data() const
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{
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QTest::addColumn<float>("t1");
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QTest::newRow("1e0") << 1e0f;
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QTest::newRow("1e-7") << 1e-7f;
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QTest::newRow("1e+7") << 1e+7f;
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}
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QTEST_MAIN(tst_float)
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#include "tst_float.moc"
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