Enum KktVariant 

pub enum KktVariant {
    KOnly,
    WithLPattern,
    WithLValues,
}

Payload-detail variant for the kkt dump category.

KOnly (the default) emits only the K matrix and the solve’s RHS/solution. WithLPattern additionally emits the LDLᵀ factor’s strict-lower nonzero pattern (L_irn / L_jcn) and the fill- reducing permutation perm. WithLValues further adds L_vals in the same order as the pattern.

The L fields are emitted in permuted coordinates — the column / row indices reference the permuted system K’ = Pᵀ K P, and the perm array carries the mapping back to original-variable space (perm[k] = original_row for the k-th permuted row).

Backends that don’t expose the factor pattern (e.g. MA57) silently skip the L fields even when this variant requests them.

Variants

KOnly

WithLPattern

WithLValues

Implementations

impl KktVariant

pub fn as_str(self) -> &'static str

pub fn wants_l_pattern(self) -> bool

True if the variant asks for the L pattern (with or without values). Used by the dump site to short-circuit the factor_pattern() call when only K is wanted.

pub fn wants_l_values(self) -> bool

True if the variant asks for the L numerical values.

Trait Implementations

impl Clone for KktVariant

fn clone(&self) -> KktVariant

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KktVariant

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

Formats the value using the given formatter.

impl Default for KktVariant

fn default() -> KktVariant

Returns the “default value” for a type.

impl PartialEq for KktVariant

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for KktVariant

impl Eq for KktVariant

impl StructuralPartialEq for KktVariant