1 files changed, 15 insertions, 1 deletions
diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp
index a4445f6e4651..55c3f48f00d4 100644
--- a/unittests/ADT/APFloatTest.cpp
+++ b/unittests/ADT/APFloatTest.cpp
@@ -1313,7 +1313,21 @@ TEST(APFloatTest, roundToIntegral) {
   P = APFloat::getInf(APFloat::IEEEdouble, true);
   P.roundToIntegral(APFloat::rmTowardZero);
   EXPECT_TRUE(std::isinf(P.convertToDouble()) && P.convertToDouble() < 0.0);
-
+}
+  
+TEST(APFloatTest, isInteger) {
+  APFloat T(-0.0);
+  EXPECT_TRUE(T.isInteger());
+  T = APFloat(3.14159);
+  EXPECT_FALSE(T.isInteger());
+  T = APFloat::getNaN(APFloat::IEEEdouble);
+  EXPECT_FALSE(T.isInteger());
+  T = APFloat::getInf(APFloat::IEEEdouble);
+  EXPECT_FALSE(T.isInteger());
+  T = APFloat::getInf(APFloat::IEEEdouble, true);
+  EXPECT_FALSE(T.isInteger());
+  T = APFloat::getLargest(APFloat::IEEEdouble);
+  EXPECT_TRUE(T.isInteger());
 }
 
 TEST(APFloatTest, getLargest) {