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Fix C3SXGate roundtrip in OpenQASM 2 (#9183)
* Fix C3SXGate roundtrip in OpenQASM 2 Qiskit and its version of `qelib1.inc` give `C3SXGate` different names: `c3sx` and `c3sqrtx` respectively. At this point, changing either of these two names is likely to cause user pain, and it should not be difficult for the OpenQASM 2 exporter to simply know about this remapping, like it knows about other standard gate mappings. In practice, the structure of the exporter makes this rather difficult, but we need not expose that complexity to users. * Correct namespace lookup * Break import cycle --------- Co-authored-by: Luciano Bello <[email protected]> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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fixes: | ||
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Circuits containing :class:`.C3SXGate` can now be output and read in again safely from the | ||
OpenQASM 2.0 exporter (:meth:`.QuantumCircuit.qasm`) and parser (:meth:`.QuantumCircuit.from_qasm_str`). |
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