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author | Yaron Keren <yaron.keren@gmail.com> | 2015-04-22 18:49:59 +0000 |
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committer | Yaron Keren <yaron.keren@gmail.com> | 2015-04-22 18:49:59 +0000 |
commit | 2adb40ecb690c3c647bb9996577d823929f39e1e (patch) | |
tree | 992f1f7e737d4faf99f29adecda9a88235471642 | |
parent | 3c55df1e842cd94491eec91c152157902e57582e (diff) |
Another test to exercise APInt divide step D6.
This is divrem_big7 since divrem_big6 is used in Pawel upcoming patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235536 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r-- | unittests/ADT/APIntTest.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/unittests/ADT/APIntTest.cpp b/unittests/ADT/APIntTest.cpp index acdc1ecbbd..a8fc3629cd 100644 --- a/unittests/ADT/APIntTest.cpp +++ b/unittests/ADT/APIntTest.cpp @@ -409,6 +409,19 @@ TEST(APIntTest, divrem_big5) { EXPECT_EQ(r, c); } +TEST(APIntTest, divrem_big7) { + // Yet another test for KnuthDiv rare step D6. + APInt a{224, "800000008000000200000005", 16}; + APInt b{224, "fffffffd", 16}; + APInt c{224, "80000000800000010000000f", 16}; + + auto p = a * b + c; + auto q = p.udiv(a); + auto r = p.urem(a); + EXPECT_EQ(q, b); + EXPECT_EQ(r, c); +} + TEST(APIntTest, fromString) { EXPECT_EQ(APInt(32, 0), APInt(32, "0", 2)); EXPECT_EQ(APInt(32, 1), APInt(32, "1", 2)); |