Struct ArpackStorage 

pub struct ArpackStorage { /* private fields */ }

Preallocated working memory for repeated ARPACK runs (igraph_arpack_storage_t), freed on drop (igraph_arpack_storage_destroy).

Pass it to arpack_rssolve/arpack_rnsolve to avoid reallocating the workspace for every eigenproblem of order at most maxn using at most maxncv Lanczos/Arnoldi vectors (remember that ncv = 0 lets igraph pick a value up to n).

Binds igraph_arpack_storage_init.

Implementations

impl ArpackStorage

pub fn new(maxn: usize, maxncv: usize, symmetric: bool) -> Result<Self>

Allocates storage for problems of order at most maxn, with at most maxncv Lanczos/Arnoldi vectors; symmetric selects the layout for arpack_rssolve (true) or arpack_rnsolve (false; such a storage also works for symmetric problems).

pub fn maxn(&self) -> usize

Maximum order of the problems.

pub fn maxncv(&self) -> usize

Maximum number of Lanczos/Arnoldi vectors.

pub fn is_symmetric(&self) -> bool

Whether the storage was allocated for symmetric problems only.

Trait Implementations

impl Debug for ArpackStorage

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

Formats the value using the given formatter.

impl Drop for ArpackStorage

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl Send for ArpackStorage