Enum PartitionRowPolicy 

pub enum PartitionRowPolicy {
    Seeded(Option<u64>),
    Cut(Vec<Vec<usize>>),
    SeededExcluding {
        seed: Option<u64>,
        exclude_x: Vec<usize>,
        exclude_z: Vec<usize>,
    },
}

Which partition rows a scatter splits by: a seeded GF(2)-random draw, or a qubit cut that keeps a channel local when its qubits share a block.

Variants

Seeded(Option<u64>)

PartitionRows::from_seed with this seed, or the sum’s own hash seed at None; the default.

Cut(Vec<Vec<usize>>)

PartitionRows::cut: one disjoint qubit block per rank, in rank order; the rows are z-only.

SeededExcluding

PartitionRows::from_seed_excluding: a seeded draw whose rows read neither the x-bits of exclude_x nor the z-bits of exclude_z, so keys differing only there share a partition.

Fields

seed: Option<u64>

As in Seeded.

exclude_x: Vec<usize>

Qubits whose x-bit no row reads.

exclude_z: Vec<usize>

Qubits whose z-bit no row reads.

Implementations

impl PartitionRowPolicy

pub fn rows<const W: usize>( &self, num_qubits: usize, bits: u8, default_seed: u64, ) -> PartitionRows<W>

The rows for 2^bits partitions of a num_qubits register, with default_seed standing in for a None seed.

Panics

As PartitionRows::cut or PartitionRows::from_seed_excluding, and if an excluded qubit is out of range.

Trait Implementations

impl Clone for PartitionRowPolicy

fn clone(&self) -> PartitionRowPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PartitionRowPolicy

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

Formats the value using the given formatter.

impl PartialEq for PartitionRowPolicy

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for PartitionRowPolicy

impl StructuralPartialEq for PartitionRowPolicy