Module sparse_functions 

Sparse matrix utility functions

This module provides convenience functions that return concrete typed sparse matrices (CsrArray<T>) instead of trait objects, plus additional utility functions for common sparse matrix constructions.

Functions provided:

• sparse_eye(n) - Sparse identity matrix
• sparse_random(m, n, density) - Random sparse matrix
• sparse_kron(A, B) - Kronecker product
• sparse_hstack(arrays) - Horizontal stacking
• sparse_vstack(arrays) - Vertical stacking
• sparse_block_diag(arrays) - Block diagonal construction
• sparse_diags(diags, offsets, shape) - Construct from diagonals

Functions

sparse_block_diag

Construct a block diagonal sparse matrix from a list of sub-matrices.

sparse_diag_matrix

Create a sparse matrix with given values on the specified diagonal.

sparse_diags

Construct a sparse matrix from diagonals.

sparse_eye

Create a sparse identity matrix of size n x n in CSR format.

sparse_eye_rect

Create a rectangular sparse identity-like matrix of size m x n in CSR format.

sparse_hstack

Stack sparse matrices horizontally (column-wise).

sparse_kron

Compute the Kronecker product of two sparse matrices.

sparse_kronsum

Kronecker sum of two sparse matrices: A (x) I_q + I_p (x) B

sparse_random

Create a random sparse matrix in CSR format.

sparse_vstack

Stack sparse matrices vertically (row-wise).