Struct QuadRowCoef 

pub struct QuadRowCoef {
    pub index: usize,
    pub curvature: f64,
    pub linear: f64,
    pub rhs: f64,
}

Point-free coefficient magnitudes of one quadratic constraint row.

curvature is ‖Q‖_∞, the largest absolute row sum of the row’s Hessian — Gershgorin’s bound on λ_max(Q), and the exact quantity stage 2’s eᵢ is built from. It is an upper bound on the curvature, not the curvature, so a mismatch measured against it understates the one measured against λ_max.

Fields

index: usize

curvature: f64

‖Q‖_∞ — see the type docs.

linear: f64

‖a‖_∞ over the .nl linear section plus the degree-1 terms the writer folded into the nonlinear tree.

rhs: f64

|b| — the finite bound the row is written against, shifted by the folded constant. A range row reports the larger magnitude.

Trait Implementations

impl Clone for QuadRowCoef

fn clone(&self) -> QuadRowCoef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QuadRowCoef

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

Formats the value using the given formatter.