Sparse matrix utilities

Sun S3L includes a set of utilities for declaring and initializing sparse matrices. Other utilities for operating on sparse matrices are provided as well.

S3L_declare_sparse declares an S3L sparse array and allocates all required memory to store its elements and sparsity pattern representation.

S3L_rand_sparse creates a random sparse matrix with a random sparsity pattern in either the Coordinate (COO) format or the Compressed Sparse Row (CSR) format. Upon successful completion, it returns an S3L array handle representing this random sparse matrix.

S3L_read_sparse reads a sparse array from a data file. Similarly, S3L_write_sparse writes a sparse S3L array to a file. S3L_print_sparse prints a sparse array to standard output.

S3L_matvec_sparse multiplies a sparse array with a dense vector.