text: /*
   * Revision Control Information
   *
   * $Source$
   * $Author$
   * $Revision$
   * $Date$
   *
   */
  #include "espresso.h"
  
  ABC_NAMESPACE_IMPL_START
  
  
  
  pset
  do_sm_minimum_cover(A)
  pset_family A;
  {
      sm_matrix *M;
      sm_row *sparse_cover;
      sm_element *pe;
      pset cover;
      register int i, base, rownum;
      register unsigned val;
      register pset last, p;
  
      M = sm_alloc();
      rownum = 0;
      foreach_set(A, last, p) {
      foreach_set_element(p, i, val, base) {
          (void) sm_insert(M, rownum, base);
      }
      rownum++;
      }
  
      sparse_cover = sm_minimum_cover(M, NIL(int), 1, 0);
      sm_free(M);
  
      cover = set_new(A->sf_size);
      sm_foreach_row_element(sparse_cover, pe) {
      set_insert(cover, pe->col_num);
      }
      sm_row_free(sparse_cover);
  
      return cover;
  }
  ABC_NAMESPACE_IMPL_END
  
  