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Differential D107986

[flang] Correct off-by-one error in SET_EXPONENT
ClosedPublic

Authored by klausler on Aug 12 2021, 11:25 AM.

Details

Reviewers
PeteSteinfeld
Commits
rGa05bae6163a3: [flang] Correct off-by-one error in SET_EXPONENT
Summary

SET_EXPONENT is returning values that are too large by a factor of two.

Diff Detail

Unit TestsFailed

TimeTest
20 msx64 debian > flang-Unit.Runtime/_/FlangRuntimeTests::Numeric.SetExponent
10 msx64 windows > flang-Unit.Runtime/_/FlangRuntimeTests_exe::Numeric.SetExponent

Event Timeline

klausler created this revision.Aug 12 2021, 11:25 AM
Herald added a subscriber: jdoerfert. · View Herald TranscriptAug 12 2021, 11:25 AM
klausler requested review of this revision.Aug 12 2021, 11:25 AM
Harbormaster completed remote builds in B119299: Diff 366052.Aug 12 2021, 12:15 PM
klausler updated this revision to Diff 366073.Aug 12 2021, 12:27 PM
klausler retitled this revision from [flang] Correct expected unit test results for SET_EXPONENT to [flang] Correct off-by-one error in SET_EXPONENT.
klausler edited the summary of this revision. (Show Details)

Fix both SET_EXPONENT and test.

PeteSteinfeld accepted this revision.Aug 12 2021, 12:48 PM

All builds, tests, and looks good.

This revision is now accepted and ready to land.Aug 12 2021, 12:48 PM
This revision was landed with ongoing or failed builds.Aug 12 2021, 12:51 PM
Closed by commit rGa05bae6163a3: [flang] Correct off-by-one error in SET_EXPONENT (authored by klausler). · Explain Why
This revision was automatically updated to reflect the committed changes.
klausler added a commit: rGa05bae6163a3: [flang] Correct off-by-one error in SET_EXPONENT.
Herald added a project: Restricted Project. · View Herald TranscriptAug 12 2021, 12:51 PM
Herald added a subscriber: llvm-commits. · View Herald Transcript
Harbormaster completed remote builds in B119313: Diff 366073.Aug 12 2021, 1:13 PM

Revision Contents

PathSize
flang/
unittests/
Runtime/
8 lines

Diff 366052

flang/unittests/Runtime/Numeric.cpp

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TEST(Numeric, SetExponent) { TEST(Numeric, SetExponent) {
EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{0}, 0), 0); EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{0}, 0), 0);
EXPECT_EQ(RTNAME(SetExponent8)(Real<8>{0}, 666), 0); EXPECT_EQ(RTNAME(SetExponent8)(Real<8>{0}, 666), 0);
EXPECT_EQ(RTNAME(SetExponent8)(Real<8>{3.0}, 0), 1.5); EXPECT_EQ(RTNAME(SetExponent8)(Real<8>{3.0}, 0), 0.75);
EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{1.0}, 0), 1.0); EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{1.0}, 0), 0.5);
EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{1.0}, 1), 2.0); EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{1.0}, 1), 1.0);
EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{1.0}, -1), 0.5); EXPECT_EQ(RTNAME(SetExponent4)(Real<4>{1.0}, -1), 0.25);
EXPECT_TRUE(std::isnan( EXPECT_TRUE(std::isnan(
RTNAME(SetExponent4)(std::numeric_limits<Real<4>>::infinity(), 1))); RTNAME(SetExponent4)(std::numeric_limits<Real<4>>::infinity(), 1)));
EXPECT_TRUE(std::isnan( EXPECT_TRUE(std::isnan(
Context not available.