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Use hash of numeric value for bound parameter expressions (backport #12488) #12547

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@mergify mergify bot commented Jun 11, 2024

Summary

If a ParameterExpression has no unbound parameters, the underlying bound value can be hashed instead of the tuple that accounts for the symbolic expression. Doing this allows for the ParameterExpression to match the hash for the numeric value it compares equal to.

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Closes #12487


This is an automatic backport of pull request #12488 done by Mergify.

* Use hash of numeric value for bound parameter expressions

If a `ParameterExpression` has no unbound parameters, the underlying
bound value can be hashed instead of the tuple that accounts for the
symbolic expression. Doing this allows for the `ParameterExpression` to
match the hash for the numeric value it compares equal to.

Closes #12487

* Add release note

(cherry picked from commit bc685d3)
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@github-actions github-actions bot added Changelog: Bugfix Include in the "Fixed" section of the changelog mod: circuit Related to the core of the `QuantumCircuit` class or the circuit library labels Jun 11, 2024
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Whoops, guess we'd need to backport .numeric too.

@mergify mergify bot deleted the mergify/bp/stable/0.46/pr-12488 branch June 12, 2024 20:56
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3 participants