Struct BlockCsrMatrix 

pub struct BlockCsrMatrix {
    pub block_size: usize,
    pub n_block_rows: usize,
    pub n_block_cols: usize,
    pub row_ptr: Vec<usize>,
    pub col_idx: Vec<usize>,
    pub blocks: Vec<Vec<f64>>,
}

Block-CSR matrix where every stored entry is a block_size × block_size dense tile.

Fields

block_size: usize

Size of each dense square block.

n_block_rows: usize

Number of block rows.

n_block_cols: usize

Number of block columns.

row_ptr: Vec<usize>

Block row start indices, length n_block_rows + 1.

col_idx: Vec<usize>

Column (block) indices.

blocks: Vec<Vec<f64>>

Dense tiles, each of length block_size * block_size.

Implementations

impl BlockCsrMatrix

pub fn spmv_block(&self, x: &[f64]) -> Vec<f64>

Sparse matrix–vector product treating the matrix as (n_block_rows * block_size) × (n_block_cols * block_size).

pub fn to_csr(&self) -> CsrMatrix

Convert to a flat CsrMatrix.