Struct ContinuationState 

pub struct ContinuationState {
    pub lambda: f64,
    pub u: Vec<f64>,
    pub tangent: Vec<f64>,
    pub arc_length: f64,
    pub ds: f64,
}

State along a continuation branch.

Stores the current parameter value lambda, the solution vector u, the previous tangent direction used for the arclength predictor, and the accumulated arc length s.

Fields

lambda: f64

Continuation parameter λ.

u: Vec<f64>

Solution vector u ∈ ℝⁿ.

tangent: Vec<f64>

Tangent direction [du/ds, dλ/ds] from the previous step.

arc_length: f64

Accumulated arc length along the branch.

ds: f64

Desired step size Δs for the next predictor.

Implementations

impl ContinuationState

pub fn new(lambda: f64, u: Vec<f64>, ds: f64) -> Self

Create a new continuation state.

• lambda — initial parameter value.
• u — initial solution vector.
• ds — initial arc-length step size.

pub fn dim(&self) -> usize

Dimension of the solution vector.

pub fn normalised_tangent(&self) -> Vec<f64>

Return a normalised copy of the tangent vector.

Trait Implementations

impl Clone for ContinuationState

fn clone(&self) -> ContinuationState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContinuationState

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

Formats the value using the given formatter.