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43 #include <QtTest/QtTest>
48 class tst_QNumeric: public QObject
53 void fuzzyCompare_data();
58 void tst_QNumeric::fuzzyCompare_data()
60 QTest::addColumn<double>("val1");
61 QTest::addColumn<double>("val2");
62 QTest::addColumn<bool>("isEqual");
64 QTest::newRow("zero") << 0.0 << 0.0 << true;
65 QTest::newRow("ten") << 10.0 << 10.0 << true;
66 QTest::newRow("large") << 1000000000.0 << 1000000000.0 << true;
67 QTest::newRow("small") << 0.00000000001 << 0.00000000001 << true;
68 QTest::newRow("eps") << 10.000000000000001 << 10.00000000000002 << true;
69 QTest::newRow("eps2") << 10.000000000000001 << 10.000000000000009 << true;
71 QTest::newRow("mis1") << 0.0 << 1.0 << false;
72 QTest::newRow("mis2") << 0.0 << 10000000.0 << false;
73 QTest::newRow("mis3") << 0.0 << 0.000000001 << false;
74 QTest::newRow("mis4") << 100000000.0 << 0.000000001 << false;
75 QTest::newRow("mis4") << 0.0000000001 << 0.000000001 << false;
78 void tst_QNumeric::fuzzyCompare()
82 QFETCH(bool, isEqual);
84 QCOMPARE(::qFuzzyCompare(val1, val2), isEqual);
85 QCOMPARE(::qFuzzyCompare(val2, val1), isEqual);
86 QCOMPARE(::qFuzzyCompare(-val1, -val2), isEqual);
87 QCOMPARE(::qFuzzyCompare(-val2, -val1), isEqual);
90 void tst_QNumeric::qNan()
93 #if defined( __INTEL_COMPILER)
94 QCOMPARE((0 > nan), false);
95 QCOMPARE((0 < nan), false);
96 QSKIP("This fails due to a bug in the Intel Compiler", SkipAll);
99 QFAIL("compiler thinks 0 > nan");
101 # if defined(Q_CC_DIAB)
102 QWARN("!(0 < nan) would fail due to a bug in dcc");
105 QFAIL("compiler thinks 0 < nan");
108 QVERIFY(qIsNaN(nan));
109 QVERIFY(qIsNaN(nan + 1));
110 QVERIFY(qIsNaN(-nan));
114 QVERIFY(qIsInf(inf));
115 QVERIFY(qIsInf(-inf));
116 QVERIFY(qIsInf(2*inf));
117 QCOMPARE(1/inf, 0.0);
118 QVERIFY(qIsNaN(0*nan));
119 QVERIFY(qIsNaN(0*inf));
120 QVERIFY(qFuzzyCompare(1/inf, 0.0));
123 QTEST_APPLESS_MAIN(tst_QNumeric)
124 #include "tst_qnumeric.moc"