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| author | Sanjay Patel <spatel@rotateright.com> | 2020-09-24 07:29:18 -0400 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2020-09-24 07:43:07 -0400 |
| commit | b2c46633d1296a9080098abc4e6c6214d19005c0 (patch) | |
| tree | d9e75b01925147d0f479edff8ff14d53dffc42d9 /llvm/unittests/ADT/APFloatTest.cpp | |
| parent | 3ed04f93e30121867a813a220452b97aebeb1730 (diff) | |
| download | llvm-b2c46633d1296a9080098abc4e6c6214d19005c0.zip llvm-b2c46633d1296a9080098abc4e6c6214d19005c0.tar.gz llvm-b2c46633d1296a9080098abc4e6c6214d19005c0.tar.bz2 | |
[APFloat] add tests for convert of NAN; NFC
More coverage for the bug fix proposed in D87835.
Diffstat (limited to 'llvm/unittests/ADT/APFloatTest.cpp')
| -rw-r--r-- | llvm/unittests/ADT/APFloatTest.cpp | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp index b24b43d..e3b4e5c 100644 --- a/llvm/unittests/ADT/APFloatTest.cpp +++ b/llvm/unittests/ADT/APFloatTest.cpp @@ -1817,10 +1817,10 @@ TEST(APFloatTest, convert) { test = APFloat::getSNaN(APFloat::IEEEsingle()); APFloat X87SNaN = APFloat::getSNaN(APFloat::x87DoubleExtended()); - test.convert(APFloat::x87DoubleExtended(), APFloat::rmNearestTiesToEven, - &losesInfo); + APFloat::opStatus status = test.convert(APFloat::x87DoubleExtended(), APFloat::rmNearestTiesToEven, &losesInfo); EXPECT_TRUE(test.bitwiseIsEqual(X87SNaN)); EXPECT_FALSE(losesInfo); + EXPECT_EQ(status, APFloat::opOK); test = APFloat::getQNaN(APFloat::IEEEsingle()); APFloat X87QNaN = APFloat::getQNaN(APFloat::x87DoubleExtended()); @@ -1840,6 +1840,20 @@ TEST(APFloatTest, convert) { &losesInfo); EXPECT_TRUE(test.bitwiseIsEqual(X87QNaN)); EXPECT_FALSE(losesInfo); + + // FIXME: This is wrong - NaN becomes Inf. + APInt payload(52, 1); + test = APFloat::getSNaN(APFloat::IEEEdouble(), false, &payload); + status = test.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven, &losesInfo); + EXPECT_EQ(0x7f800000, test.bitcastToAPInt()); + EXPECT_TRUE(losesInfo); + EXPECT_EQ(status, APFloat::opOK); + + test = APFloat::getQNaN(APFloat::IEEEdouble(), false, &payload); + status = test.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven, &losesInfo); + EXPECT_EQ(0x7fc00000, test.bitcastToAPInt()); + EXPECT_TRUE(losesInfo); + EXPECT_EQ(status, APFloat::opOK); } TEST(APFloatTest, PPCDoubleDouble) { |