Struct InvarianceWitness 

pub struct InvarianceWitness {
    pub boundary: usize,
    pub shared: u64,
    pub shift_only: u64,
    pub gate_only: u64,
}

The basis state that witnessed a class-invariance failure.

Enough to reproduce the failure by hand: the shift that broke, and how many qubits the offending basis state holds in each of the three blocks the phase reads. The three occupancies determine both overlap counts, so they determine the phase, so they are the counterexample.

Fields

boundary: usize

Index into the boundaries slice of the shift that failed.

shared: u64

|γ ∩ b ∩ x|, the occupancy of the block both chains cover.

shift_only: u64

|(b \ γ) ∩ x|, the occupancy of the block only the shift covers.

gate_only: u64

|(γ \ b) ∩ x|, the occupancy of the block only the gate’s chain covers.

Trait Implementations

impl Clone for InvarianceWitness

fn clone(&self) -> InvarianceWitness

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for InvarianceWitness

impl Debug for InvarianceWitness

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for InvarianceWitness

impl PartialEq for InvarianceWitness

fn eq(&self, other: &InvarianceWitness) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for InvarianceWitness