diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Support/APFloat.cpp | 3 | ||||
| -rw-r--r-- | llvm/unittests/ADT/APFloatTest.cpp | 14 |
2 files changed, 17 insertions, 0 deletions
diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp index f835bd1fbd2..f7fb0cef16b 100644 --- a/llvm/lib/Support/APFloat.cpp +++ b/llvm/lib/Support/APFloat.cpp @@ -1743,6 +1743,7 @@ IEEEFloat::opStatus IEEEFloat::remainder(const IEEEFloat &rhs) { IEEEFloat::opStatus IEEEFloat::mod(const IEEEFloat &rhs) { opStatus fs; fs = modSpecials(rhs); + unsigned int origSign = sign; while (isFiniteNonZero() && rhs.isFiniteNonZero() && compareAbsoluteValue(rhs) != cmpLessThan) { @@ -1754,6 +1755,8 @@ IEEEFloat::opStatus IEEEFloat::mod(const IEEEFloat &rhs) { fs = subtract(V, rmNearestTiesToEven); assert(fs==opOK); } + if (isZero()) + sign = origSign; // fmod requires this return fs; } diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp index 280a0862ccc..84fb6fad156 100644 --- a/llvm/unittests/ADT/APFloatTest.cpp +++ b/llvm/unittests/ADT/APFloatTest.cpp @@ -3289,6 +3289,20 @@ TEST(APFloatTest, mod) { EXPECT_EQ(f1.mod(f2), APFloat::opInvalidOp); EXPECT_TRUE(f1.isNaN()); } + { + APFloat f1(APFloat::IEEEdouble(), "-4.0"); + APFloat f2(APFloat::IEEEdouble(), "-2.0"); + APFloat expected(APFloat::IEEEdouble(), "-0.0"); + EXPECT_EQ(f1.mod(f2), APFloat::opOK); + EXPECT_TRUE(f1.bitwiseIsEqual(expected)); + } + { + APFloat f1(APFloat::IEEEdouble(), "-4.0"); + APFloat f2(APFloat::IEEEdouble(), "2.0"); + APFloat expected(APFloat::IEEEdouble(), "-0.0"); + EXPECT_EQ(f1.mod(f2), APFloat::opOK); + EXPECT_TRUE(f1.bitwiseIsEqual(expected)); + } } TEST(APFloatTest, PPCDoubleDoubleAddSpecial) { |
