diff options
Diffstat (limited to 'tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp')
| -rw-r--r-- | tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp | 73 |
1 files changed, 56 insertions, 17 deletions
diff --git a/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp b/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp index 6be8ff81cf..8232ca8fba 100644 --- a/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp +++ b/tests/auto/corelib/global/qnumeric/tst_qnumeric.cpp @@ -1,31 +1,27 @@ /**************************************************************************** ** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ +** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2016 Intel Corporation. +** Contact: https://www.qt.io/licensing/ ** ** This file is part of the test suite of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:LGPL21$ +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms -** and conditions see http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. ** -** 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 or version 3 as published by the Free -** Software Foundation and appearing in the file LICENSE.LGPLv21 and -** LICENSE.LGPLv3 included in the packaging of this file. Please review the -** following information to ensure the GNU Lesser General Public License -** requirements will be met: https://www.gnu.org/licenses/lgpl.html and -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** As a special exception, The Qt Company gives you certain additional -** rights. These rights are described in The Qt Company LGPL Exception -** version 1.1, 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 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** @@ -55,6 +51,7 @@ private slots: void addOverflow(); void mulOverflow_data(); void mulOverflow(); + void signedOverflow(); }; void tst_QNumeric::fuzzyCompare_data() @@ -105,6 +102,18 @@ void tst_QNumeric::qNan() QVERIFY(qIsNaN(nan)); QVERIFY(qIsNaN(nan + 1)); QVERIFY(qIsNaN(-nan)); + + Q_STATIC_ASSERT(sizeof(double) == 8); +#ifdef Q_LITTLE_ENDIAN + const uchar bytes[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf0, 0x7f }; +#else + const uchar bytes[] = { 0x7f, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }; +#endif + memcpy(&nan, bytes, 8); + QVERIFY(!qIsFinite(nan)); + QVERIFY(!qIsInf(nan)); + QVERIFY(qIsNaN(nan)); + double inf = qInf(); QVERIFY(inf > 0); QVERIFY(-inf < 0); @@ -366,5 +375,35 @@ void tst_QNumeric::mulOverflow() MulOverflowDispatch<quint64>()(); } +void tst_QNumeric::signedOverflow() +{ + const int minInt = std::numeric_limits<int>::min(); + const int maxInt = std::numeric_limits<int>::max(); + int r; + + QCOMPARE(add_overflow(minInt + 1, int(-1), &r), false); + QCOMPARE(add_overflow(minInt, int(-1), &r), true); + QCOMPARE(add_overflow(minInt, minInt, &r), true); + QCOMPARE(add_overflow(maxInt - 1, int(1), &r), false); + QCOMPARE(add_overflow(maxInt, int(1), &r), true); + QCOMPARE(add_overflow(maxInt, maxInt, &r), true); + + QCOMPARE(sub_overflow(minInt + 1, int(1), &r), false); + QCOMPARE(sub_overflow(minInt, int(1), &r), true); + QCOMPARE(sub_overflow(minInt, maxInt, &r), true); + QCOMPARE(sub_overflow(maxInt - 1, int(-1), &r), false); + QCOMPARE(sub_overflow(maxInt, int(-1), &r), true); + QCOMPARE(sub_overflow(maxInt, minInt, &r), true); + + QCOMPARE(mul_overflow(minInt, int(1), &r), false); + QCOMPARE(mul_overflow(minInt, int(-1), &r), true); + QCOMPARE(mul_overflow(minInt, int(2), &r), true); + QCOMPARE(mul_overflow(minInt, minInt, &r), true); + QCOMPARE(mul_overflow(maxInt, int(1), &r), false); + QCOMPARE(mul_overflow(maxInt, int(-1), &r), false); + QCOMPARE(mul_overflow(maxInt, int(2), &r), true); + QCOMPARE(mul_overflow(maxInt, maxInt, &r), true); +} + QTEST_APPLESS_MAIN(tst_QNumeric) #include "tst_qnumeric.moc" |