Struct LdlSymbolic

pub struct LdlSymbolic<I> { /* private fields */ }

Structure to compute and hold a symbolic LDLT decomposition

Implementations

impl<I: SpIndex> LdlSymbolic<I>

pub fn new<N>(mat: CsMatViewI<'_, N, I>) -> Self

where N: Copy + PartialEq,

Compute the symbolic LDLT of the given matrix

Panics

• if mat is not symmetric

pub fn new_perm<N>( mat: CsMatViewI<'_, N, I>, perm: PermOwnedI<I>, check_symmetry: SymmetryCheck, ) -> Self

where N: Copy + PartialEq, I: SpIndex,

Compute the symbolic decomposition L D L^T = P A P^T where P is a permutation matrix.

Using a good permutation matrix can reduce the non-zero count in L, thus making the decomposition and the solves faster.

Panics

• if mat is not symmetric

pub fn problem_size(&self) -> usize

The size of the linear system associated with this decomposition

pub fn nnz(&self) -> usize

The number of non-zero entries in L

pub fn factor<N>( self, mat: CsMatViewI<'_, N, I>, ) -> Result<LdlNumeric<N, I>, LinalgError>

where N: Copy + Num + PartialOrd,

Compute the numerical decomposition of the given matrix.

Trait Implementations

impl<I: Clone> Clone for LdlSymbolic<I>

fn clone(&self) -> LdlSymbolic<I>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I: Debug> Debug for LdlSymbolic<I>

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

Formats the value using the given formatter.