Struct LineSearchOptions 

pub struct LineSearchOptions {
    pub watchdog_shortened_iter_trigger: Index,
    pub watchdog_trial_iter_max: Index,
    pub soft_resto_pderror_reduction_factor: Number,
    pub max_soft_resto_iters: Index,
    pub accept_every_trial_step: bool,
    pub alpha_for_y: AlphaForY,
}

Knobs baked into the assembled BacktrackingLineSearch. Defaults mirror IpBacktrackingLineSearch.cpp:RegisterOptions.

Fields

watchdog_shortened_iter_trigger: Index

watchdog_trial_iter_max: Index

soft_resto_pderror_reduction_factor: Number

soft_resto_pderror_reduction_factor — required relative reduction in the primal-dual error for a soft-resto step. 0 disables the soft restoration phase.

max_soft_resto_iters: Index

max_soft_resto_iters — cap on consecutive soft-resto iterations before full restoration is forced.

accept_every_trial_step: bool

accept_every_trial_step — short-circuits the filter / alpha loop and accepts the full fraction-to-the-boundary step every outer iteration. Mirrors upstream’s IpBacktrackingLineSearch::accept_every_trial_step_. Drops global convergence guarantees; only safe for problems where the Newton step is already a descent step (LPs, convex QPs). The Mehrotra cascade in application.rs flips this on.

alpha_for_y: AlphaForY

alpha_for_y — policy for the equality-multiplier (y_c / y_d) step length. Upstream default is Primal; the Mehrotra cascade switches to BoundMult.

Trait Implementations

impl Clone for LineSearchOptions

fn clone(&self) -> LineSearchOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LineSearchOptions

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

Formats the value using the given formatter.

impl Default for LineSearchOptions

fn default() -> Self

Returns the “default value” for a type.