diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2012-08-19 10:31:50 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2012-08-19 10:31:50 +0000 |
| commit | 902a7b529820e6a0aa85f98f21afaeb1805a22f8 (patch) | |
| tree | e7da40d2f6ef824f7371860826845870e6e1dcd5 /unittests/ADT/APFloatTest.cpp | |
| parent | 58b69754af0cbff56b1cfce9be9392e4451f6628 (diff) | |
Diffstat (limited to 'unittests/ADT/APFloatTest.cpp')
| -rw-r--r-- | unittests/ADT/APFloatTest.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp index cc207f764da2d..00b62feaeb156 100644 --- a/unittests/ADT/APFloatTest.cpp +++ b/unittests/ADT/APFloatTest.cpp @@ -648,6 +648,49 @@ TEST(APFloatTest, exactInverse) { EXPECT_FALSE(APFloat(1.40129846e-45f).getExactInverse(0)); } +TEST(APFloatTest, roundToIntegral) { + APFloat T(-0.5), S(3.14), R(APFloat::getLargest(APFloat::IEEEdouble)), 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()); + + P = R; + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_EQ(R.convertToDouble(), P.convertToDouble()); + P = R; + P.roundToIntegral(APFloat::rmTowardNegative); + EXPECT_EQ(R.convertToDouble(), P.convertToDouble()); + P = R; + P.roundToIntegral(APFloat::rmTowardPositive); + EXPECT_EQ(R.convertToDouble(), P.convertToDouble()); + P = R; + P.roundToIntegral(APFloat::rmNearestTiesToEven); + EXPECT_EQ(R.convertToDouble(), 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()); |