Struct ArrowRowBlock 

pub struct ArrowRowBlock {
    pub htt: Array2<f64>,
    pub htbeta: Array2<f64>,
    pub gt: Array1<f64>,
}

Per-row block data for the arrow-Schur system.

htt holds the d × d Gauss–Newton block for row i (including any analytic-penalty contributions on that row); htbeta holds the d × K cross-block H_tβ^(i); gt is the d-length latent gradient for row i.

Fields

htt: Array2<f64>

H_tt^(i), shape (d, d).

htbeta: Array2<f64>

H_tβ^(i), shape (d, K).

gt: Array1<f64>

g_t^(i), shape (d,).

Implementations

impl ArrowRowBlock

pub fn new(d: usize, k: usize) -> Self

Allocate one BA point-block row: local latent Hessian, point-camera cross block, and point gradient.

pub fn new_with_htbeta_cols(d: usize, htbeta_cols: usize) -> Self

Allocate one BA row whose dense cross-block slab has htbeta_cols columns. This is used by matrix-free assemblers that keep the shared beta tier at one width while dense row supplements live in another coordinate system.

Trait Implementations

impl Clone for ArrowRowBlock

fn clone(&self) -> ArrowRowBlock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ArrowRowBlock

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

Formats the value using the given formatter.