Add a unittest for APFloat::getSmallest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182894 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp
index 099f6db..4b51e85 100644
--- a/unittests/ADT/APFloatTest.cpp
+++ b/unittests/ADT/APFloatTest.cpp
@@ -794,6 +794,32 @@
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");