Struct Armijo 

pub struct Armijo {
    pub control: Scalar,
    pub cut_back: Scalar,
    pub max_steps: usize,
}

The Armijo condition on the objective.

Fields

control: Scalar

cut_back: Scalar

max_steps: usize

Trait Implementations

impl Clone for Armijo

fn clone(&self) -> Armijo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Armijo

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

Formats the value using the given formatter.

impl Default for Armijo

fn default() -> Self

Returns the “default value” for a type.

impl Display for Armijo

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

Formats the value using the given formatter.

impl ObjectiveMerit for Armijo

fn search<W, U, V>( &self, value: impl FnMut(Quantity<W>) -> Result<Quantity<V>, String>, slope: impl FnMut(Quantity<W>) -> Result<Quantity<U>, String>, step_size: Quantity<W>, ) -> Result<Quantity<W>, LineSearchError<W>>

where W: UnitMul<U, Output = V>,

Backtrack along a step of the objective, whose slope along it is known.

fn search_merit( &self, merit: impl FnMut(Scalar) -> Result<Scalar, String>, value: Scalar, slope: Scalar, step_size: Scalar, ) -> Result<Scalar, LineSearchError>

Backtrack on a merit function of the step size alone.

const SEARCHES: bool = true

Whether anything is searched at all.

const MERIT: bool = true

Whether the value and slope of the merit are read, and so worth preparing.