sal/qa/rtl/math/test-rtl-math.cxx | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
New commits:
commit 2907779a5c576b341ef33e795617a7c54de668a2
Author: Eike Rathke <er...@redhat.com>
Date: Sat Oct 1 12:12:38 2016 +0200
unit test cases for approxEqual() and approxSub()
Change-Id: I4aa53d83feaccd3d08c69a35cee2fa84f1ec0964
Reviewed-on: https://gerrit.libreoffice.org/29429
Reviewed-by: Eike Rathke <er...@redhat.com>
Tested-by: Jenkins <c...@libreoffice.org>
diff --git a/sal/qa/rtl/math/test-rtl-math.cxx
b/sal/qa/rtl/math/test-rtl-math.cxx
index 7dd492d..a2e3e2e 100644
--- a/sal/qa/rtl/math/test-rtl-math.cxx
+++ b/sal/qa/rtl/math/test-rtl-math.cxx
@@ -205,6 +205,28 @@ public:
CPPUNIT_ASSERT_EQUAL( OUString("9.00719925474099E+015"), aRes);
}
+ void test_approx() {
+ // (2^53)-1 , (2^53)-3
+ CPPUNIT_ASSERT_EQUAL( false, rtl::math::approxEqual(
9007199254740991.0, 9007199254740989.0));
+ // (2^53)-1 , (2^53)-2
+ CPPUNIT_ASSERT_EQUAL( false, rtl::math::approxEqual(
9007199254740991.0, 9007199254740990.0));
+ // Note: the following are internally represented as 900719925474099.12
+ // and 900719925474098.88 and the difference is 0.25 ...
+ CPPUNIT_ASSERT_EQUAL( true, rtl::math::approxEqual( 900719925474099.1,
900719925474098.9));
+ CPPUNIT_ASSERT_EQUAL( true, rtl::math::approxEqual(
72.944444444444443, 72.9444444444444));
+ CPPUNIT_ASSERT_EQUAL( true, rtl::math::approxEqual(
359650.27322404372, 359650.27322404401));
+ CPPUNIT_ASSERT_EQUAL( true, rtl::math::approxEqual(
5.3590326375710063e+238, 5.3590326375710109e+238));
+ CPPUNIT_ASSERT_EQUAL( true, rtl::math::approxEqual(
7.4124095894894475e+158, 7.4124095894894514e+158));
+ CPPUNIT_ASSERT_EQUAL( true, rtl::math::approxEqual(
1.2905754687023132e+79, 1.2905754687023098e+79));
+ CPPUNIT_ASSERT_EQUAL( true, rtl::math::approxEqual(
3.5612905090455637e+38, 3.5612905090455599e+38));
+ // 0.3 - 0.2 - 0.1 == 0.0
+ CPPUNIT_ASSERT_EQUAL( 0.0, rtl::math::approxSub( rtl::math::approxSub(
0.3, 0.2), 0.1));
+ // ((2^53)-1) - ((2^53)-2) == 1.0
+ CPPUNIT_ASSERT_EQUAL( 1.0, rtl::math::approxSub( 9007199254740991.0,
9007199254740990.0));
+ // (3^31) - ((3^31)-1) == 1.0
+ CPPUNIT_ASSERT_EQUAL( 1.0, rtl::math::approxSub( 617673396283947.0,
617673396283946.0));
+ }
+
void test_erf() {
double x, res;
x = 0.0;
@@ -298,6 +320,7 @@ public:
CPPUNIT_TEST(test_erfc);
CPPUNIT_TEST(test_expm1);
CPPUNIT_TEST(test_log1p);
+ CPPUNIT_TEST(test_approx);
CPPUNIT_TEST_SUITE_END();
};
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