diff options
Diffstat (limited to 'unittests')
| -rw-r--r-- | unittests/ADT/APFloatTest.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp index cc207f7..caa288a 100644 --- a/unittests/ADT/APFloatTest.cpp +++ b/unittests/ADT/APFloatTest.cpp @@ -648,6 +648,36 @@ TEST(APFloatTest, exactInverse) { EXPECT_FALSE(APFloat(1.40129846e-45f).getExactInverse(0)); } +TEST(APFloatTest, roundToIntegral) { + APFloat T(-0.5), S(3.14), P(0.0); + + P = T; + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_EQ(-0.0, P.convertToDouble()); + P = T; + P.roundToIntegral(APFloat::rmTowardNegative); + EXPECT_EQ(-1.0, P.convertToDouble()); + P = T; + P.roundToIntegral(APFloat::rmTowardPositive); + EXPECT_EQ(-0.0, P.convertToDouble()); + P = T; + P.roundToIntegral(APFloat::rmNearestTiesToEven); + EXPECT_EQ(-0.0, P.convertToDouble()); + + P = S; + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_EQ(3.0, P.convertToDouble()); + P = S; + P.roundToIntegral(APFloat::rmTowardNegative); + EXPECT_EQ(3.0, P.convertToDouble()); + P = S; + P.roundToIntegral(APFloat::rmTowardPositive); + EXPECT_EQ(4.0, P.convertToDouble()); + P = S; + P.roundToIntegral(APFloat::rmNearestTiesToEven); + EXPECT_EQ(3.0, P.convertToDouble()); +} + TEST(APFloatTest, getLargest) { EXPECT_EQ(3.402823466e+38f, APFloat::getLargest(APFloat::IEEEsingle).convertToFloat()); EXPECT_EQ(1.7976931348623158e+308, APFloat::getLargest(APFloat::IEEEdouble).convertToDouble()); |