Input

• spfmt - Indicates the sparse storage format used for representing the sparse matrix. Use S3L_SPARSE_COO to specify the Coordinate format and S3L_SPARSE_CSR for the Compressed Sparse Row format.

• m - Indicates the total number of rows in the sparse matrix.

• n - Indicates the total number of columns in the sparse matrix.

• row - Integer parallel array of rank 1. Its length and content can vary, depending on the sparse storage format used.

  • S3L_SPARSE_COO - row is of the same size as arrays col and val. and contains row indices of the nonzero elements in array val.

  • S3L_SPARSE_CSR- row is of size m+1 and contains pointers to the beginning of each row in arrays col and val.

• col - Integer global array of rank 1 with the same length as array val. It contains column indices of the corresponding elements stored in array val.

• val - Parallel array of rank 1, containing the nonzero elements of the sparse matrix. For S3L_SPARSE_COO, nonzero elements can be stored in any order. For S3L_SPARSE_CSR, they should be stored row by row, from the first row to the last. The length of val for both S3L_SPARSE_COO and S3L_SPARSE_CSR is, nnz, the total number of nonzero elements in the sparse matrix. The data type of array elements can be real or complex (single- or double-precision).