[ADT] Add basic operator overloads for arithmetic to APFloat to make
code using it more readable.
Also add a copySign static function that works more like the standard
function by accepting the value and sign-carying value as arguments.
No interesting logic here, but tests added to cover the basic API
additions and make sure they do something plausible.
llvm-svn: 219453
diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp
index 8f298cd..a4816ef 100644
--- a/llvm/unittests/ADT/APFloatTest.cpp
+++ b/llvm/unittests/ADT/APFloatTest.cpp
@@ -1342,6 +1342,17 @@
}
}
+TEST(APFloatTest, copySign) {
+ EXPECT_TRUE(APFloat(-42.0).bitwiseIsEqual(
+ APFloat::copySign(APFloat(42.0), APFloat(-1.0))));
+ EXPECT_TRUE(APFloat(42.0).bitwiseIsEqual(
+ APFloat::copySign(APFloat(-42.0), APFloat(1.0))));
+ EXPECT_TRUE(APFloat(-42.0).bitwiseIsEqual(
+ APFloat::copySign(APFloat(-42.0), APFloat(-1.0))));
+ EXPECT_TRUE(APFloat(42.0).bitwiseIsEqual(
+ APFloat::copySign(APFloat(42.0), APFloat(1.0))));
+}
+
TEST(APFloatTest, convert) {
bool losesInfo;
APFloat test(APFloat::IEEEdouble, "1.0");
@@ -2671,4 +2682,13 @@
}
}
+TEST(APFloatTest, operatorOverloads) {
+ // This is mostly testing that these operator overloads compile.
+ APFloat One = APFloat(APFloat::IEEEsingle, "0x1p+0");
+ APFloat Two = APFloat(APFloat::IEEEsingle, "0x2p+0");
+ EXPECT_TRUE(Two.bitwiseIsEqual(One + One));
+ EXPECT_TRUE(One.bitwiseIsEqual(Two - One));
+ EXPECT_TRUE(Two.bitwiseIsEqual(One * Two));
+ EXPECT_TRUE(One.bitwiseIsEqual(Two / Two));
+}
}