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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 | c38fab201364abdcf3ea653d68cb278d32c19fa1 (patch) | |
| tree | d74ce7dba543efda8eb8f8a45581aaa9a70aa8f7 /llvm/unittests/ADT/APFloatTest.cpp | |
| parent | cd3a11f72576b88578f5615ab3d24919b6e60aae (diff) | |
| download | llvm-c38fab201364abdcf3ea653d68cb278d32c19fa1.zip llvm-c38fab201364abdcf3ea653d68cb278d32c19fa1.tar.gz llvm-c38fab201364abdcf3ea653d68cb278d32c19fa1.tar.bz2 | |
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.
llvm-svn: 164698
Diffstat (limited to 'llvm/unittests/ADT/APFloatTest.cpp')
| -rw-r--r-- | llvm/unittests/ADT/APFloatTest.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp index 00b62fe..c8d7177 100644 --- a/llvm/unittests/ADT/APFloatTest.cpp +++ b/llvm/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) { |