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Qiskit / qiskit / 26091433602
88%

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DEFAULT BRANCH: main
Ran 19 May 2026 10:59AM UTC
Jobs 1
Files 940
Run time 4min
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19 May 2026 10:00AM UTC coverage: 87.687% (-0.01%) from 87.697%
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Fix `InverseCancellation` for symmetric pairs (#16153)

* Fix `InverseCancellation` for symmetric pairs.

Symmetric gates should get cancelled irrespective of the qubit order. This did not happen in InverseCancellation, which didn't consistently cancel CS and CSdg gates in the default setup since their qubit argument were out of order. Coincidentally _it did_ cancel these gates in a specific order as a by product since the boolean logic was not grouped correctly, as reported in #15855. This commit fixes this behavior.

This commit does not more generally enable handling of symmetric, user-supplied gates.

* Better inverse pair structure

Co-authored-by: Jake Lishman <jake.lishman@ibm.com>

* More precise wording in reno

---------

Co-authored-by: Jake Lishman <jake.lishman@ibm.com>

17 of 17 new or added lines in 1 file covered. (100.0%)

24 existing lines in 3 files now uncovered.

107900 of 123052 relevant lines covered (87.69%)

950074.85 hits per line

Coverage Regressions

Lines Coverage ∆ File
18
96.68
-0.95% crates/qasm2/src/parse.rs
5
91.77
-0.51% crates/qasm2/src/lex.rs
1
91.04
0.0% crates/circuit/src/parameter/parameter_expression.rs
Jobs
ID Job ID Ran Files Coverage
1 26091433602.1 19 May 2026 10:59AM UTC 940
87.69
GitHub Action Run
Source Files on build 26091433602
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  • Changed 5
  • Source Changed 1
  • Coverage Changed 5
Coverage ∆ File Lines Relevant Covered Missed Hits/Line
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