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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-09-26 14:06:58 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-09-26 14:06:58 +0000 |
| commit | 3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb (patch) | |
| tree | 438b0956b900cfe4122320661082c65a9ddf82d4 /unittests | |
| parent | 50b7d70707960155ad28ff23d7622009b7b97eb3 (diff) | |
| download | llvm-3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb.tar.gz llvm-3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb.tar.bz2 llvm-3e7735fe1c9e8f1cbad1bac02fbb998017fd0cbb.tar.xz | |
APFloat::roundToIntegral: Special values don't keep the exponent value up to date, don't rely on it.
Add a couple of unit tests for special floats. Fixes 13929, found by MemorySanitizer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164698 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'unittests')
| -rw-r--r-- | unittests/ADT/APFloatTest.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/unittests/ADT/APFloatTest.cpp b/unittests/ADT/APFloatTest.cpp index 00b62feaeb..c8d7177d86 100644 --- a/unittests/ADT/APFloatTest.cpp +++ b/unittests/ADT/APFloatTest.cpp @@ -689,6 +689,23 @@ TEST(APFloatTest, roundToIntegral) { P = R; P.roundToIntegral(APFloat::rmNearestTiesToEven); EXPECT_EQ(R.convertToDouble(), P.convertToDouble()); + + P = APFloat::getZero(APFloat::IEEEdouble); + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_EQ(0.0, P.convertToDouble()); + P = APFloat::getZero(APFloat::IEEEdouble, true); + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_EQ(-0.0, P.convertToDouble()); + P = APFloat::getNaN(APFloat::IEEEdouble); + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_TRUE(IsNAN(P.convertToDouble())); + P = APFloat::getInf(APFloat::IEEEdouble); + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_TRUE(IsInf(P.convertToDouble()) && P.convertToDouble() > 0.0); + P = APFloat::getInf(APFloat::IEEEdouble, true); + P.roundToIntegral(APFloat::rmTowardZero); + EXPECT_TRUE(IsInf(P.convertToDouble()) && P.convertToDouble() < 0.0); + } TEST(APFloatTest, getLargest) { |