Struct LuStats 

pub struct LuStats {

    pub m: usize,
    pub nnz_basis: usize,
    pub nnz_l: usize,
    pub nnz_u: usize,
    pub fill_in: usize,
    pub col_singletons: usize,
    pub row_singletons: usize,
    pub markowitz_pivots: usize,
    pub growth: f64,
    pub factorizations: usize,
    pub ftran: SolveStats,
    pub btran: SolveStats,
    pub ftran_update: SolveStats,
    pub max_basis: f64,
    pub max_u: f64,
    pub max_u_fresh: f64,
    pub growth_exceeded: bool,
    pub symbolic_reuses: usize,
    pub symbolic_fallbacks: usize,
}

Statistics of the current factor, for logs and the phase-1 benchmark. The update counters are in UpdateStats.

Fields

m: usize

Dimension m of the basis.

nnz_basis: usize

Nonzeros of B at the last factorization.

nnz_l: usize

Stored multipliers of L (its unit diagonal is implicit).

nnz_u: usize

Entries of U, including the m diagonal entries.

fill_in: usize

Fill-in nnz_l + nnz_u + nnz_eta − nnz_basis (saturating at 0; nnz_eta from UpdateStats).

col_singletons: usize

Pivots taken as column singletons in the triangular phase (L3).

row_singletons: usize

Pivots taken as row singletons in the triangular phase (L4).

markowitz_pivots: usize

Pivots chosen by the Markowitz search (L5): the size of the bump.

growth: f64

Growth factor max_u / max_basis.

factorizations: usize

Successful factorizations performed by this object.

ftran: SolveStats

FTRAN calls (Chapter 5.4), accumulated over the life of the object.

btran: SolveStats

BTRAN calls, accumulated over the life of the object.

ftran_update: SolveStats

FTRAN-for-update calls, accumulated over the life of the object.

max_basis: f64

max |b_ij| at the last factorization.

max_u: f64

Largest |u_ij| ever stored since the last factorization.

max_u_fresh: f64

max |u_ij| right after the last factorization (before any update).

growth_exceeded: bool

growth > LuOptions::growth_limit; a diagnostic of the factorization itself (a fresh factor may already be flagged).

symbolic_reuses: usize

Refactorizations that reused the pivot sequence of the previous factorization (LuFactor::refactorize_same_pattern, Algorithm R of Chapter 5.12), accumulated over the life of the object.

symbolic_fallbacks: usize

Calls of LuFactor::refactorize_same_pattern that fell back to a full factorization (no sequence, another order m, or a pivot refused by the threshold test), accumulated over the life of the object.

Trait Implementations

impl Clone for LuStats

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LuStats

impl Debug for LuStats

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

Formats the value using the given formatter.

impl Default for LuStats

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for LuStats

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LuStats