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47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016 Ivailo Monev
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**
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** This file is part of the test suite of the Katie Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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**
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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
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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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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtTest/QtTest>
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#include <qmath.h>
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static const qreal PI = 3.14159265358979323846264338327950288;
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class tst_QMath : public QObject
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{
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Q_OBJECT
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private slots:
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void sinCos();
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};
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void tst_QMath::sinCos()
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{
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// Test evenly spaced angles from 0 to 2pi radians.
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const int LOOP_COUNT = 100000;
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for (int i = 0; i < LOOP_COUNT; ++i) {
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qreal angle = i * 2 * PI / (LOOP_COUNT - 1);
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QVERIFY(qAbs(qSin(angle) - qSin(angle)) < 1e-5);
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QVERIFY(qAbs(qCos(angle) - qCos(angle)) < 1e-5);
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}
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}
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QTEST_APPLESS_MAIN(tst_QMath)
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#include "moc_tst_qmath.cpp"
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