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Add a unittest for APFloat::getSmallest. 

llvm-svn: 182894
This commit is contained in:
Michael Gottesman 2013-05-29 23:58:29 +00:00
parent 83793fc188
commit 63e6d21c72
1 changed files with 26 additions and 0 deletions
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26
llvm/unittests/ADT/APFloatTest.cpp
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@ -794,6 +794,32 @@ TEST(APFloatTest, getLargest) {
EXPECT_EQ(1.7976931348623158e+308, APFloat::getLargest(APFloat::IEEEdouble).convertToDouble());
}
TEST(APFloatTest, getSmallest) {
APFloat test = APFloat::getSmallest(APFloat::IEEEsingle, false);
APFloat expected = APFloat(APFloat::IEEEsingle, "0x0.000002p-126");
EXPECT_TRUE(!test.isNegative());
EXPECT_TRUE(test.isNormal());
EXPECT_TRUE(test.bitwiseIsEqual(expected));
test = APFloat::getSmallest(APFloat::IEEEsingle, true);
expected = APFloat(APFloat::IEEEsingle, "-0x0.000002p-126");
EXPECT_TRUE(test.isNegative());
EXPECT_TRUE(test.isNormal());
EXPECT_TRUE(test.bitwiseIsEqual(expected));
test = APFloat::getSmallest(APFloat::IEEEquad, false);
expected = APFloat(APFloat::IEEEquad, "0x0.0000000000000000000000000001p-16382");
EXPECT_TRUE(!test.isNegative());
EXPECT_TRUE(test.isNormal());
EXPECT_TRUE(test.bitwiseIsEqual(expected));
test = APFloat::getSmallest(APFloat::IEEEquad, true);
expected = APFloat(APFloat::IEEEquad, "-0x0.0000000000000000000000000001p-16382");
EXPECT_TRUE(test.isNegative());
EXPECT_TRUE(test.isNormal());
EXPECT_TRUE(test.bitwiseIsEqual(expected));
}
TEST(APFloatTest, convert) {
bool losesInfo;
APFloat test(APFloat::IEEEdouble, "1.0");