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Support Cirq 1.7 change in exponents that affects rendering of circuit diagrams #1397

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Support Cirq 1.7 change in exponents that affects rendering of circuit diagrams #1397

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e7a2e9f
Support Cirq 1.7 change in exponents in circuit diagrams
mhucka Jul 2, 2026
c999669
Merge branch 'main' into fix-diagram-change
mhucka Jul 2, 2026
57a25c2
Update src/openfermion/circuits/gates/four_qubit_gates.py
mhucka Jul 2, 2026
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10 changes: 7 additions & 3 deletions src/openfermion/circuits/gates/four_qubit_gates.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,9 +124,13 @@ def _circuit_diagram_info_(self, args: cirq.CircuitDiagramInfoArgs) -> cirq.Circ
# Split up this string to avoid SyntaxError in Python 3.12.
down_up = r'\/ /' + '\\'
wire_symbols = (up_down, up_down, down_up, down_up)
return cirq.CircuitDiagramInfo(
wire_symbols=wire_symbols, exponent=self._diagram_exponent(args)
)

exponent = self._diagram_exponent(args)
if isinstance(exponent, (int, float, np.integer, np.floating)):
# Canonicalize rounded exponent into (-1, 1] range (DoubleExcitation has period 2)
exponent = 1.0 - (1.0 - exponent) % 2.0

return cirq.CircuitDiagramInfo(wire_symbols=wire_symbols, exponent=exponent)

def __repr__(self):
if self.exponent == 1:
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