Struct BsrMatrix

pub struct BsrMatrix<T> { /* private fields */ }

Block Sparse Row (BSR) matrix

A sparse matrix format that stores blocks in compressed sparse row format, making it efficient for block-structured matrices.

Implementations

impl<T> BsrMatrix<T>

where T: Clone + Copy + Zero + PartialEq,

pub fn new( shape: (usize, usize), block_size: (usize, usize), ) -> SparseResult<Self>

Create a new BSR matrix

Arguments

• shape - Tuple containing the matrix dimensions (rows, cols)
• block_size - Tuple containing the block dimensions (r, c)

Returns

• A new empty BSR matrix

Examples

use scirs2_sparse::bsr::BsrMatrix;

// Create a 6x6 sparse matrix with 2x2 blocks
let matrix = BsrMatrix::<f64>::new((6, 6), (2, 2)).unwrap();

pub fn from_blocks( data: Vec<Vec<Vec<T>>>, indices: Vec<Vec<usize>>, indptr: Vec<usize>, shape: (usize, usize), block_size: (usize, usize), ) -> SparseResult<Self>

Create a BSR matrix from block data

Arguments

• data - Block data (blocks stored row by row)
• indices - Column indices for each block
• indptr - Row pointers
• shape - Tuple containing the matrix dimensions (rows, cols)
• block_size - Tuple containing the block dimensions (r, c)

Returns

• A new BSR matrix

pub fn rows(&self) -> usize

Get the number of rows in the matrix

pub fn cols(&self) -> usize

Get the number of columns in the matrix

pub fn shape(&self) -> (usize, usize)

Get the shape (dimensions) of the matrix

pub fn block_size(&self) -> (usize, usize)

Get the block size

pub fn nnz_blocks(&self) -> usize

Get the number of non-zero blocks in the matrix

pub fn nnz(&self) -> usize

Get the number of non-zero elements in the matrix

pub fn to_dense(&self) -> Vec<Vec<T>>

where T: Zero + Copy,

Convert to dense matrix (as Vec<Vec>)