Enum Algorithm 

pub enum Algorithm {
    Linear,
    Newton {
        tangent: TangentStrategy,
        line_search: Option<LineSearch>,
    },
    KrylovNewton {
        tangent: TangentStrategy,
        max_dimension: usize,
    },
}

Iteration strategy for resolving each step’s equilibrium. Closed enum . docs/algorithms.md designs Newton/KrylovNewton as three composable axes (tangent strategy, line search, Krylov acceleration) rather than a combinatorial pile of variants — see that doc for the full design and Xara reference map.

Variants

Linear

One tangent formation, one solve, no re-iteration and no convergence check — correct (and exact, to solver tolerance) whenever the tangent doesn’t change with the solution, i.e. linear response. Matches OpenSees’ Linear algorithm semantics.

Newton

Newton-family iteration: re-forms the residual every iteration and solves against whichever tangent tangent says to form/factor (TangentStrategy), until ConvergenceTest passes or its max_iter is exceeded (AnalysisError::FailedToConverge). tangent: TangentStrategy::Current, line_search: None is today’s old bare NewtonRaphson variant, exactly.

Fields

tangent: TangentStrategy

Which tangent gets formed/factored at each iteration.

line_search: Option<LineSearch>

None: accept each raw Newton correction outright. Some(_): rescale a correction that doesn’t already satisfy the convergence test at eta = 1 (docs/algorithms.md §4).

KrylovNewton

Modified Newton (solving against a stale tangent — tangent, almost always Initial/ReuseAtStepStart in practice) with a Krylov-subspace correction (docs/algorithms.md §5) applied to each raw solve, extrapolating from the history of how the last max_dimension corrections actually moved the residual to recover most of full Newton’s convergence rate without paying for a fresh factorization every iteration.

Fields

tangent: TangentStrategy

max_dimension: usize

Trait Implementations

impl Clone for Algorithm

fn clone(&self) -> Algorithm

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Algorithm

impl Debug for Algorithm

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

Formats the value using the given formatter.