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author | Alan Mishchenko <alanmi@berkeley.edu> | 2007-10-01 08:01:00 -0700 |
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committer | Alan Mishchenko <alanmi@berkeley.edu> | 2007-10-01 08:01:00 -0700 |
commit | 4812c90424dfc40d26725244723887a2d16ddfd9 (patch) | |
tree | b32ace96e7e2d84d586e09ba605463b6f49c3271 /src/misc/espresso/dominate.c | |
parent | e54d9691616b9a0326e2fdb3156bb4eeb8abfcd7 (diff) | |
download | abc-4812c90424dfc40d26725244723887a2d16ddfd9.tar.gz abc-4812c90424dfc40d26725244723887a2d16ddfd9.tar.bz2 abc-4812c90424dfc40d26725244723887a2d16ddfd9.zip |
Version abc71001
Diffstat (limited to 'src/misc/espresso/dominate.c')
-rw-r--r-- | src/misc/espresso/dominate.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/misc/espresso/dominate.c b/src/misc/espresso/dominate.c new file mode 100644 index 00000000..a930d453 --- /dev/null +++ b/src/misc/espresso/dominate.c @@ -0,0 +1,98 @@ +/* + * Revision Control Information + * + * $Source$ + * $Author$ + * $Revision$ + * $Date$ + * + */ +#include "mincov_int.h" + + +int +sm_row_dominance(A) +sm_matrix *A; +{ + register sm_row *prow, *prow1; + register sm_col *pcol, *least_col; + register sm_element *p, *pnext; + int rowcnt; + + rowcnt = A->nrows; + + /* Check each row against all other rows */ + for(prow = A->first_row; prow != 0; prow = prow->next_row) { + + /* Among all columns with a 1 in this row, choose smallest */ + least_col = sm_get_col(A, prow->first_col->col_num); + for(p = prow->first_col->next_col; p != 0; p = p->next_col) { + pcol = sm_get_col(A, p->col_num); + if (pcol->length < least_col->length) { + least_col = pcol; + } + } + + /* Only check for containment against rows in this column */ + for(p = least_col->first_row; p != 0; p = pnext) { + pnext = p->next_row; + + prow1 = sm_get_row(A, p->row_num); + if ((prow1->length > prow->length) || + (prow1->length == prow->length && + prow1->row_num > prow->row_num)) { + if (sm_row_contains(prow, prow1)) { + sm_delrow(A, prow1->row_num); + } + } + } + } + + return rowcnt - A->nrows; +} + +int +sm_col_dominance(A, weight) +sm_matrix *A; +int *weight; +{ + register sm_row *prow; + register sm_col *pcol, *pcol1; + register sm_element *p; + sm_row *least_row; + sm_col *next_col; + int colcnt; + + colcnt = A->ncols; + + /* Check each column against all other columns */ + for(pcol = A->first_col; pcol != 0; pcol = next_col) { + next_col = pcol->next_col; + + /* Check all rows to find the one with fewest elements */ + least_row = sm_get_row(A, pcol->first_row->row_num); + for(p = pcol->first_row->next_row; p != 0; p = p->next_row) { + prow = sm_get_row(A, p->row_num); + if (prow->length < least_row->length) { + least_row = prow; + } + } + + /* Only check for containment against columns in this row */ + for(p = least_row->first_col; p != 0; p = p->next_col) { + pcol1 = sm_get_col(A, p->col_num); + if (weight != 0 && weight[pcol1->col_num] > weight[pcol->col_num]) + continue; + if ((pcol1->length > pcol->length) || + (pcol1->length == pcol->length && + pcol1->col_num > pcol->col_num)) { + if (sm_col_contains(pcol, pcol1)) { + sm_delcol(A, pcol->col_num); + break; + } + } + } + } + + return colcnt - A->ncols; +} |