Struct RowScaleBlock 

pub struct RowScaleBlock {
    pub n_rows: usize,
    pub fires: bool,
    pub n_scaled: usize,
    pub min_scale: Number,
    pub n_at_floor: usize,
    pub n_zero_jac: usize,
}

One row block’s share of the gradient-based scaling preview.

The equalities (c) and the inequalities (d) are gated separately upstream: unless some row of the block exceeds the cutoff, the whole block is left unscaled. So fires is not redundant with n_scaled.

Fields

n_rows: usize

fires: bool

Whether the block gets a scale vector at all.

n_scaled: usize

Rows the block would scale down (factor < 1). Zero when !fires.

min_scale: Number

Smallest factor assigned, or 1.0 when nothing is scaled.

n_at_floor: usize

Rows driven all the way to nlp_scaling_min_value.

n_zero_jac: usize

Rows whose Jacobian is entirely zero at x0. These are the rows the sample cannot see; they come out at 1.0 whatever their coefficients are.

Trait Implementations

impl Clone for RowScaleBlock

fn clone(&self) -> RowScaleBlock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowScaleBlock

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

Formats the value using the given formatter.

impl Default for RowScaleBlock

fn default() -> RowScaleBlock

Returns the “default value” for a type.