diff options
| -rw-r--r-- | lib/Support/APFloat.cpp | 5 | ||||
| -rw-r--r-- | unittests/ADT/APFloatTest.cpp | 6 |
2 files changed, 6 insertions, 5 deletions
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp index 43c68f4d1d..7e8b4a3d0d 100644 --- a/lib/Support/APFloat.cpp +++ b/lib/Support/APFloat.cpp @@ -3553,11 +3553,6 @@ void APFloat::toString(SmallVectorImpl<char> &Str, } bool APFloat::getExactInverse(APFloat *inv) const { - // We can only guarantee the existence of an exact inverse for IEEE floats. - if (semantics != &IEEEhalf && semantics != &IEEEsingle && - semantics != &IEEEdouble && semantics != &IEEEquad) - return false; - // Special floats and denormals have no exact inverse. if (category != fcNormal) return false; diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp index 48d5d83019..117b8204b9 100644 --- a/unittests/ADT/APFloatTest.cpp +++ b/unittests/ADT/APFloatTest.cpp @@ -635,6 +635,12 @@ TEST(APFloatTest, exactInverse) { EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(0.5))); EXPECT_TRUE(APFloat(2.0f).getExactInverse(&inv)); EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(0.5f))); + EXPECT_TRUE(APFloat(APFloat::IEEEquad, "2.0").getExactInverse(&inv)); + EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(APFloat::IEEEquad, "0.5"))); + EXPECT_TRUE(APFloat(APFloat::PPCDoubleDouble, "2.0").getExactInverse(&inv)); + EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(APFloat::PPCDoubleDouble, "0.5"))); + EXPECT_TRUE(APFloat(APFloat::x87DoubleExtended, "2.0").getExactInverse(&inv)); + EXPECT_TRUE(inv.bitwiseIsEqual(APFloat(APFloat::x87DoubleExtended, "0.5"))); // FLT_MIN EXPECT_TRUE(APFloat(1.17549435e-38f).getExactInverse(&inv)); |