Struct LeastSquareInitReport 

pub struct LeastSquareInitReport {
    pub violation_initial: Number,
    pub violation_final: Number,
    pub step_norm: Number,
    pub alpha: Number,
    pub rejected_trials: Index,
    pub termination: &'static str,
}

What the safeguarded least-square initializer did. Returned by DefaultIterateInitializer::safeguarded_least_square_x and readable after the solve through crate::application::IpoptApplication::least_square_init_report, so a starting point that silently got worse is visible somewhere other than the iteration count. It is primarily a programmatic accessor; since gh#616 the same fields are also emitted once per solve at debug level on the pounce::algorithm target, so a fixture sweep can attribute a moving model without a source patch (RUST_LOG=pounce::algorithm=debug). Nothing prints it at the default log level.

Fields

violation_initial: Number

Nonlinear violation at the user’s x0, after the interior push.

violation_final: Number

Nonlinear violation at the point actually handed to the algorithm. Equal to violation_initial when nothing was accepted.

step_norm: Number

alpha * ||x_ls - x0||_2 for the accepted trial; 0 if none was.

alpha: Number

Step fraction of the accepted trial; 0 if none was.

rejected_trials: Index

Backtracking trials whose true violation failed the test.

termination: &'static str

Why the safeguard stopped.

Trait Implementations

impl Clone for LeastSquareInitReport

fn clone(&self) -> LeastSquareInitReport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LeastSquareInitReport

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

Formats the value using the given formatter.

impl Default for LeastSquareInitReport

fn default() -> LeastSquareInitReport

Returns the “default value” for a type.