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ScheduledSwapStep

tensor4all_treetn::treetn

Struct ScheduledSwapStep 

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pub struct ScheduledSwapStep<V, Id>
where
    Id: Eq + Hash,
{
    pub transport_path: Vec<V>,
    pub node_a: V,
    pub node_b: V,
    pub a_side_sites: HashSet<Id>,
    pub b_side_sites: HashSet<Id>,
}
Expand description

A single two-site update step in a pre-computed swap schedule.

Use this to inspect exactly which edge is updated, whether the canonical center must be transported first, and which site indices must end up on each side of the edge after the local factorization.

Related types:

  • SwapSchedule stores the full ordered sequence of these steps.
  • SwapOptions controls truncation only during execution, not schedule construction.

§Examples

use std::collections::HashSet;

use tensor4all_treetn::ScheduledSwapStep;

let step = ScheduledSwapStep {
    transport_path: vec!["L0".to_string(), "C".to_string()],
    node_a: "C".to_string(),
    node_b: "L1".to_string(),
    a_side_sites: HashSet::from(["s1".to_string()]),
    b_side_sites: HashSet::from(["s0".to_string()]),
};

assert_eq!(step.transport_path, vec!["L0".to_string(), "C".to_string()]);
assert!(step.a_side_sites.contains("s1"));
assert!(step.b_side_sites.contains("s0"));

Fields§

§transport_path: Vec<V>

Path to transport the canonical center before the swap.

Empty when the center is already at node_a or node_b. Otherwise this is [current_center, ..., node_a].

§node_a: V

The first node in the directed sweep edge.

§node_b: V

The second node in the directed sweep edge.

§a_side_sites: HashSet<Id>

Site index IDs that should live on node_a’s side after this step.

§b_side_sites: HashSet<Id>

Site index IDs that should live on node_b’s side after this step.

Trait Implementations§

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impl<V: Clone, Id> Clone for ScheduledSwapStep<V, Id>
where Id: Eq + Hash + Clone,

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fn clone(&self) -> ScheduledSwapStep<V, Id>

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl<V: Debug, Id> Debug for ScheduledSwapStep<V, Id>
where Id: Eq + Hash + Debug,

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

Formats the value using the given formatter. Read more
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impl<V: PartialEq, Id> PartialEq for ScheduledSwapStep<V, Id>
where Id: Eq + Hash + PartialEq,

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fn eq(&self, other: &ScheduledSwapStep<V, Id>) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<V: Eq, Id> Eq for ScheduledSwapStep<V, Id>
where Id: Eq + Hash + Eq,

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impl<V, Id> StructuralPartialEq for ScheduledSwapStep<V, Id>
where Id: Eq + Hash,

Auto Trait Implementations§

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impl<V, Id> Freeze for ScheduledSwapStep<V, Id>
where V: Freeze,

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impl<V, Id> RefUnwindSafe for ScheduledSwapStep<V, Id>
where V: RefUnwindSafe, Id: RefUnwindSafe,

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impl<V, Id> Send for ScheduledSwapStep<V, Id>
where V: Send, Id: Send,

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impl<V, Id> Sync for ScheduledSwapStep<V, Id>
where V: Sync, Id: Sync,

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impl<V, Id> Unpin for ScheduledSwapStep<V, Id>
where V: Unpin, Id: Unpin,

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impl<V, Id> UnsafeUnpin for ScheduledSwapStep<V, Id>
where V: UnsafeUnpin,

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impl<V, Id> UnwindSafe for ScheduledSwapStep<V, Id>
where V: UnwindSafe, Id: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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Casts self to type T. The semantics of numeric casting with the as operator are followed, so <T as As>::as_::<U> can be used in the same way as T as U for numeric conversions. Read more
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🔬This is a nightly-only experimental API. (clone_to_uninit)
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