Struct SparseMatrix 

pub struct SparseMatrix {
    pub nrows: usize,
    pub ncols: usize,
    pub row_ptr: Vec<usize>,
    pub col_idx: Vec<usize>,
    pub values: Vec<f64>,
}

Sparse matrix in Compressed Sparse Row (CSR) format.

row_ptr[i]..row_ptr[i+1] gives the range of column indices/values for row i.

Fields

nrows: usize

Number of rows.

ncols: usize

Number of columns.

row_ptr: Vec<usize>

Row pointers (length nrows + 1).

col_idx: Vec<usize>

Column indices of non-zero entries.

values: Vec<f64>

Non-zero values.

Implementations

impl SparseMatrix

pub fn from_triplets( nrows: usize, ncols: usize, triplets: &[(usize, usize, f64)], ) -> Self

Build a SparseMatrix from a list of (row, col, value) triplets.

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

Sparse matrix-vector product: y = A * x.

pub fn nnz(&self) -> usize

Return the number of non-zero entries.