part.c File Reference

#include "mincov_int.h"

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Functions
int	sm_block_partition (sm_matrix *A, sm_matrix **L, sm_matrix **R)

Function Documentation

sm_block_partition()

int sm_block_partition	(	sm_matrix *	A,
		sm_matrix **	L,
		sm_matrix **	R )

Definition at line 88 of file part.c.

{
    int cols_visited, rows_visited;
    register sm_row *prow;
    register sm_col *pcol;
 
    /* Avoid the trivial case */
    if (A->nrows == 0) {
    return 0;
    }
 
    /* Reset the visited flags for each row and column */
    for(prow = A->first_row; prow != 0; prow = prow->next_row) {
    prow->flag = 0;
    }
    for(pcol = A->first_col; pcol != 0; pcol = pcol->next_col) {
    pcol->flag = 0;
    }
 
    cols_visited = rows_visited = 0;
    if (visit_row(A, A->first_row, &rows_visited, &cols_visited)) {
    /* we found all of the rows */
    return 0;
    } else {
    *L = sm_alloc();
    *R = sm_alloc();
    for(prow = A->first_row; prow != 0; prow = prow->next_row) {
        if (prow->flag) {
        copy_row(*L, prow);
        } else {
        copy_row(*R, prow);
        }
    }
    return 1;
    }
}

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