Struct StepResult

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pub struct StepResult {
    pub step: Mat<f64>,
    pub predicted_reduction: f64,
    pub hit_boundary: bool,
}

Expand description

A scaled step produced by a SubproblemStep.

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§step: Mat<f64>

The scaled step δ̃ (p×1); the driver maps it back via δ = δ̃/D.

§predicted_reduction: f64

Predicted reduction −g̃ᵀδ̃ − ½‖J̃δ̃‖² (≥ 0 for a useful step).

§hit_boundary: bool

Whether the step reached the trust-region boundary ‖δ̃‖ = Δ (the driver expands Δ on a very good boundary step).

Auto Trait Implementations§

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impl UnwindSafe for StepResult

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