Struct SqpOptions 

pub struct SqpOptions {

    pub globalization: SqpGlobalization,
    pub hessian: SqpHessianSource,
    pub tol: Number,
    pub constr_viol_tol: Number,
    pub dual_inf_tol: Number,
    pub max_iter: u32,
    pub l1_penalty: Number,
    pub l1_penalty_safety: Number,
    pub l1_penalty_max: Number,
    pub bt_reduction: Number,
    pub bt_min_alpha: Number,
    pub print_level: u8,
    pub lbfgs_max_history: u32,
}

Fields

globalization: SqpGlobalization

hessian: SqpHessianSource

tol: Number

KKT tolerance (max-norm) on the stationarity residual.

constr_viol_tol: Number

Tolerance on constraint violation (max-norm).

dual_inf_tol: Number

Tolerance on stationarity residual (max-norm).

max_iter: u32

Outer-iteration cap.

l1_penalty: Number

l1-merit penalty parameter ν. Used only when globalization = L1Elastic. Filter globalization ignores this. Default is a moderate starting value; the Han-Powell ν-adaptation in l1_merit_line_search grows ν to dominate ‖λ_qp‖_∞ + l1_penalty_safety on every iteration.

l1_penalty_safety: Number

Additive safety margin in the Han-Powell ν update: ν_new = max(ν, ‖λ_qp‖_∞ + l1_penalty_safety). Default 0.1 per Nocedal-Wright §18.4. Only consulted when globalization = L1Elastic.

l1_penalty_max: Number

Upper clamp on ν. Prevents catastrophic Armijo failure on pathological problems where ‖λ_qp‖ momentarily spikes. Default 1e10 — large enough not to interfere with normal runs, small enough to keep the merit numerically stable. Only consulted when globalization = L1Elastic.

bt_reduction: Number

Backtracking line-search reduction factor.

bt_min_alpha: Number

Minimum step before declaring line-search failure.

print_level: u8

print_level: 0 = silent, 1 = per-iteration summary, 2+ = trace (planned).

lbfgs_max_history: u32

Number of (s, y) history pairs retained when hessian = Lbfgs. Mirrors the upstream limited_memory_max_history default of 6 (Nocedal-Wright recommends 3–20). Ignored for Exact and DampedBfgs.

Trait Implementations

impl Clone for SqpOptions

fn clone(&self) -> SqpOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SqpOptions

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

Formats the value using the given formatter.

impl Default for SqpOptions

fn default() -> Self

Returns the “default value” for a type.