Struct SquaredAffine 

pub struct SquaredAffine {
    pub weight: f64,
    pub coefs: Vec<(usize, f64)>,
    pub constant: f64,
}

One w·(bᵀx + d)² term of a FactoredQuadratic.

coefs is b, ascending by variable index and free of stored zeros — the same convention Quad2::linear keeps, because that is where it comes from. It may be empty, which is a square of a constant: the term is then w·d², contributes nothing to the gradient or the Hessian, and is kept rather than folded so that the value is still computed the way it was written.

Fields

weight: f64

The constant the square is multiplied by, sign of the sum spine already folded in.

coefs: Vec<(usize, f64)>

b, ascending by variable index.

constant: f64

d.

Trait Implementations

impl Clone for SquaredAffine

fn clone(&self) -> SquaredAffine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SquaredAffine

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

Formats the value using the given formatter.

impl PartialEq for SquaredAffine

fn eq(&self, other: &SquaredAffine) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SquaredAffine