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| author | Chandler Carruth <chandlerc@gmail.com> | 2014-10-10 04:54:30 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2014-10-10 04:54:30 +0000 |
| commit | d9edd1e2abcb46d379bd12aca7724bfed3638dcb (patch) | |
| tree | 5b2c2839acdce0c5f63e2e126cb536f3d07ccc54 /llvm/unittests/ADT/APFloatTest.cpp | |
| parent | e16b92db2d7b05f67225d3e7b40bda4d201ca548 (diff) | |
| download | bcm5719-llvm-d9edd1e2abcb46d379bd12aca7724bfed3638dcb.tar.gz bcm5719-llvm-d9edd1e2abcb46d379bd12aca7724bfed3638dcb.zip | |
[ADT] Add the scalbn function for APFloat.
llvm-svn: 219473
Diffstat (limited to 'llvm/unittests/ADT/APFloatTest.cpp')
| -rw-r--r-- | llvm/unittests/ADT/APFloatTest.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp index 8dd6f9f9931..bc11dab663f 100644 --- a/llvm/unittests/ADT/APFloatTest.cpp +++ b/llvm/unittests/ADT/APFloatTest.cpp @@ -2742,4 +2742,47 @@ TEST(APFloatTest, logb) { EXPECT_TRUE(APFloat(APFloat::IEEEsingle, "-0x7Ep+0") .bitwiseIsEqual(logb(MSmallestNormalized))); } + +TEST(APFloatTest, scalbn) { + EXPECT_TRUE( + APFloat(APFloat::IEEEsingle, "0x1p+0") + .bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), 0))); + EXPECT_TRUE( + APFloat(APFloat::IEEEsingle, "0x1p+42") + .bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), 42))); + EXPECT_TRUE( + APFloat(APFloat::IEEEsingle, "0x1p-42") + .bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), -42))); + + APFloat PInf = APFloat::getInf(APFloat::IEEEsingle, false); + APFloat MInf = APFloat::getInf(APFloat::IEEEsingle, true); + APFloat PZero = APFloat::getZero(APFloat::IEEEsingle, false); + APFloat MZero = APFloat::getZero(APFloat::IEEEsingle, true); + APFloat QPNaN = APFloat::getNaN(APFloat::IEEEsingle, false); + APFloat QMNaN = APFloat::getNaN(APFloat::IEEEsingle, true); + APFloat SNaN = APFloat::getSNaN(APFloat::IEEEsingle, false); + + EXPECT_TRUE(PInf.bitwiseIsEqual(scalbn(PInf, 0))); + EXPECT_TRUE(MInf.bitwiseIsEqual(scalbn(MInf, 0))); + EXPECT_TRUE(PZero.bitwiseIsEqual(scalbn(PZero, 0))); + EXPECT_TRUE(MZero.bitwiseIsEqual(scalbn(MZero, 0))); + EXPECT_TRUE(QPNaN.bitwiseIsEqual(scalbn(QPNaN, 0))); + EXPECT_TRUE(QMNaN.bitwiseIsEqual(scalbn(QMNaN, 0))); + EXPECT_TRUE(SNaN.bitwiseIsEqual(scalbn(SNaN, 0))); + + EXPECT_TRUE( + PInf.bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), 128))); + EXPECT_TRUE(MInf.bitwiseIsEqual( + scalbn(APFloat(APFloat::IEEEsingle, "-0x1p+0"), 128))); + EXPECT_TRUE( + PInf.bitwiseIsEqual(scalbn(APFloat(APFloat::IEEEsingle, "0x1p+127"), 1))); + EXPECT_TRUE(PZero.bitwiseIsEqual( + scalbn(APFloat(APFloat::IEEEsingle, "0x1p+0"), -127))); + EXPECT_TRUE(MZero.bitwiseIsEqual( + scalbn(APFloat(APFloat::IEEEsingle, "-0x1p+0"), -127))); + EXPECT_TRUE(PZero.bitwiseIsEqual( + scalbn(APFloat(APFloat::IEEEsingle, "0x1p-126"), -1))); + EXPECT_TRUE(PZero.bitwiseIsEqual( + scalbn(APFloat(APFloat::IEEEsingle, "0x1p-126"), -1))); +} } |
