cirq.validate_qid_shape

Validates the size of the given state_vector against the given shape.

cirq.validate_qid_shape(
    state_vector: np.ndarray, qid_shape: (tuple[int, ...] | None)
) -> tuple[int, ...]

Returns
The qid shape.

Raises
`ValueError`	if the size of `state_vector` does not match that given in `qid_shape`, or if `qid_shape` is not given and `state_vector` does not have a dimension that is a power of two.

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Last updated 2026-06-30 UTC.

Returns