csc_dusadd csc_dussv_sor csr_dusadd csr_dussv_sor csx_diag csx_diag_ind csx_sort dense_nnz

csx_diag_ind() void csx_diag_ind ( int  m, int  n, const int  ptr[], const int  ind[], int  base, int  id[], int *  info  ) Indices to diagonal elements of sparse matrix (CSC/CSR) Purpose This routine stores the indices to diagonal elements of CSC/CSR sparse matrix into the array id[]. Parameters [in] m Number of rows of the matrix. (m >= 0) (if m = 0, returns without computation) [in] n Number of columns of the matrix. (n >= 0) (if n = 0, returns without computation) [in] ptr[] Array ptr[lptr] (lptr >= n + 1) Column pointers (if CSC) or row pointers (if CSR) of input matrix. [in] ind[] Array ind[lind] (lind >= nnz) Row indices (if CSC) or column indices (if CSR) of input matrix (where nnz is the number of nonzero elements). [in] base Indexing of ptr[] and ind[]. = 0: Zero-based (C style) indexing: Starting index is 0. = 1: One-based (Fortran style) indexing: Starting index is 1. [out] id[] Array id[lid] (lid >= min(m, n)) Indices to diagonal elements (i = 0 to min(m, n) - 1). If diagonal element is not found, -1 is stored. [out] info = 0: Successful exit. = i < 0: The (-i)-th argument is invalid. = j > 0: The j diagonal elements are not found.