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authorAlan Mishchenko <alanmi@berkeley.edu>2008-01-30 08:01:00 -0800
committerAlan Mishchenko <alanmi@berkeley.edu>2008-01-30 08:01:00 -0800
commit4d30a1e4f1edecff86d5066ce4653a370e59e5e1 (patch)
tree366355938a4af0a92f848841ac65374f338d691b /src/misc/espresso/matrix.c
parent6537f941887b06e588d3acfc97b5fdf48875cc4e (diff)
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Version abc80130
Diffstat (limited to 'src/misc/espresso/matrix.c')
-rw-r--r--src/misc/espresso/matrix.c574
1 files changed, 0 insertions, 574 deletions
diff --git a/src/misc/espresso/matrix.c b/src/misc/espresso/matrix.c
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-/*
- * Revision Control Information
- *
- * $Source$
- * $Author$
- * $Revision$
- * $Date$
- *
- */
-//#include "port.h"
-#include "sparse_int.h"
-
-/*
- * free-lists are only used if 'FAST_AND_LOOSE' is set; this is because
- * we lose the debugging capability of libmm_t which trashes objects when
- * they are free'd. However, FAST_AND_LOOSE is much faster if matrices
- * are created and freed frequently.
- */
-
-#ifdef FAST_AND_LOOSE
-sm_element *sm_element_freelist;
-sm_row *sm_row_freelist;
-sm_col *sm_col_freelist;
-#endif
-
-
-sm_matrix *
-sm_alloc()
-{
- register sm_matrix *A;
-
- A = ALLOC(sm_matrix, 1);
- A->rows = NIL(sm_row *);
- A->cols = NIL(sm_col *);
- A->nrows = A->ncols = 0;
- A->rows_size = A->cols_size = 0;
- A->first_row = A->last_row = NIL(sm_row);
- A->first_col = A->last_col = NIL(sm_col);
- A->user_word = NIL(char); /* for our user ... */
- return A;
-}
-
-
-sm_matrix *
-sm_alloc_size(row, col)
-int row, col;
-{
- register sm_matrix *A;
-
- A = sm_alloc();
- sm_resize(A, row, col);
- return A;
-}
-
-
-void
-sm_free(A)
-sm_matrix *A;
-{
-#ifdef FAST_AND_LOOSE
- register sm_row *prow;
-
- if (A->first_row != 0) {
- for(prow = A->first_row; prow != 0; prow = prow->next_row) {
- /* add the elements to the free list of elements */
- prow->last_col->next_col = sm_element_freelist;
- sm_element_freelist = prow->first_col;
- }
-
- /* Add the linked list of rows to the row-free-list */
- A->last_row->next_row = sm_row_freelist;
- sm_row_freelist = A->first_row;
-
- /* Add the linked list of cols to the col-free-list */
- A->last_col->next_col = sm_col_freelist;
- sm_col_freelist = A->first_col;
- }
-#else
- register sm_row *prow, *pnext_row;
- register sm_col *pcol, *pnext_col;
-
- for(prow = A->first_row; prow != 0; prow = pnext_row) {
- pnext_row = prow->next_row;
- sm_row_free(prow);
- }
- for(pcol = A->first_col; pcol != 0; pcol = pnext_col) {
- pnext_col = pcol->next_col;
- pcol->first_row = pcol->last_row = NIL(sm_element);
- sm_col_free(pcol);
- }
-#endif
-
- /* Free the arrays to map row/col numbers into pointers */
- FREE(A->rows);
- FREE(A->cols);
- FREE(A);
-}
-
-
-sm_matrix *
-sm_dup(A)
-sm_matrix *A;
-{
- register sm_row *prow;
- register sm_element *p;
- register sm_matrix *B;
-
- B = sm_alloc();
- if (A->last_row != 0) {
- sm_resize(B, A->last_row->row_num, A->last_col->col_num);
- for(prow = A->first_row; prow != 0; prow = prow->next_row) {
- for(p = prow->first_col; p != 0; p = p->next_col) {
- (void) sm_insert(B, p->row_num, p->col_num);
- }
- }
- }
- return B;
-}
-
-
-void
-sm_resize(A, row, col)
-register sm_matrix *A;
-int row, col;
-{
- register int i, new_size;
-
- if (row >= A->rows_size) {
- new_size = MAX(A->rows_size*2, row+1);
- A->rows = REALLOC(sm_row *, A->rows, new_size);
- for(i = A->rows_size; i < new_size; i++) {
- A->rows[i] = NIL(sm_row);
- }
- A->rows_size = new_size;
- }
-
- if (col >= A->cols_size) {
- new_size = MAX(A->cols_size*2, col+1);
- A->cols = REALLOC(sm_col *, A->cols, new_size);
- for(i = A->cols_size; i < new_size; i++) {
- A->cols[i] = NIL(sm_col);
- }
- A->cols_size = new_size;
- }
-}
-
-
-/*
- * insert -- insert a value into the matrix
- */
-sm_element *
-sm_insert(A, row, col)
-register sm_matrix *A;
-register int row, col;
-{
- register sm_row *prow;
- register sm_col *pcol;
- register sm_element *element;
- sm_element *save_element;
-
- if (row >= A->rows_size || col >= A->cols_size) {
- sm_resize(A, row, col);
- }
-
- prow = A->rows[row];
- if (prow == NIL(sm_row)) {
- prow = A->rows[row] = sm_row_alloc();
- prow->row_num = row;
- sorted_insert(sm_row, A->first_row, A->last_row, A->nrows,
- next_row, prev_row, row_num, row, prow);
- }
-
- pcol = A->cols[col];
- if (pcol == NIL(sm_col)) {
- pcol = A->cols[col] = sm_col_alloc();
- pcol->col_num = col;
- sorted_insert(sm_col, A->first_col, A->last_col, A->ncols,
- next_col, prev_col, col_num, col, pcol);
- }
-
- /* get a new item, save its address */
- sm_element_alloc(element);
- save_element = element;
-
- /* insert it into the row list */
- sorted_insert(sm_element, prow->first_col, prow->last_col,
- prow->length, next_col, prev_col, col_num, col, element);
-
- /* if it was used, also insert it into the column list */
- if (element == save_element) {
- sorted_insert(sm_element, pcol->first_row, pcol->last_row,
- pcol->length, next_row, prev_row, row_num, row, element);
- } else {
- /* otherwise, it was already in matrix -- free element we allocated */
- sm_element_free(save_element);
- }
- return element;
-}
-
-
-sm_element *
-sm_find(A, rownum, colnum)
-sm_matrix *A;
-int rownum, colnum;
-{
- sm_row *prow;
- sm_col *pcol;
-
- prow = sm_get_row(A, rownum);
- if (prow == NIL(sm_row)) {
- return NIL(sm_element);
- } else {
- pcol = sm_get_col(A, colnum);
- if (pcol == NIL(sm_col)) {
- return NIL(sm_element);
- }
- if (prow->length < pcol->length) {
- return sm_row_find(prow, colnum);
- } else {
- return sm_col_find(pcol, rownum);
- }
- }
-}
-
-
-void
-sm_remove(A, rownum, colnum)
-sm_matrix *A;
-int rownum, colnum;
-{
- sm_remove_element(A, sm_find(A, rownum, colnum));
-}
-
-
-
-void
-sm_remove_element(A, p)
-register sm_matrix *A;
-register sm_element *p;
-{
- register sm_row *prow;
- register sm_col *pcol;
-
- if (p == 0) return;
-
- /* Unlink the element from its row */
- prow = sm_get_row(A, p->row_num);
- dll_unlink(p, prow->first_col, prow->last_col,
- next_col, prev_col, prow->length);
-
- /* if no more elements in the row, discard the row header */
- if (prow->first_col == NIL(sm_element)) {
- sm_delrow(A, p->row_num);
- }
-
- /* Unlink the element from its column */
- pcol = sm_get_col(A, p->col_num);
- dll_unlink(p, pcol->first_row, pcol->last_row,
- next_row, prev_row, pcol->length);
-
- /* if no more elements in the column, discard the column header */
- if (pcol->first_row == NIL(sm_element)) {
- sm_delcol(A, p->col_num);
- }
-
- sm_element_free(p);
-}
-
-void
-sm_delrow(A, i)
-sm_matrix *A;
-int i;
-{
- register sm_element *p, *pnext;
- sm_col *pcol;
- sm_row *prow;
-
- prow = sm_get_row(A, i);
- if (prow != NIL(sm_row)) {
- /* walk across the row */
- for(p = prow->first_col; p != 0; p = pnext) {
- pnext = p->next_col;
-
- /* unlink the item from the column (and delete it) */
- pcol = sm_get_col(A, p->col_num);
- sm_col_remove_element(pcol, p);
-
- /* discard the column if it is now empty */
- if (pcol->first_row == NIL(sm_element)) {
- sm_delcol(A, pcol->col_num);
- }
- }
-
- /* discard the row -- we already threw away the elements */
- A->rows[i] = NIL(sm_row);
- dll_unlink(prow, A->first_row, A->last_row,
- next_row, prev_row, A->nrows);
- prow->first_col = prow->last_col = NIL(sm_element);
- sm_row_free(prow);
- }
-}
-
-void
-sm_delcol(A, i)
-sm_matrix *A;
-int i;
-{
- register sm_element *p, *pnext;
- sm_row *prow;
- sm_col *pcol;
-
- pcol = sm_get_col(A, i);
- if (pcol != NIL(sm_col)) {
- /* walk down the column */
- for(p = pcol->first_row; p != 0; p = pnext) {
- pnext = p->next_row;
-
- /* unlink the element from the row (and delete it) */
- prow = sm_get_row(A, p->row_num);
- sm_row_remove_element(prow, p);
-
- /* discard the row if it is now empty */
- if (prow->first_col == NIL(sm_element)) {
- sm_delrow(A, prow->row_num);
- }
- }
-
- /* discard the column -- we already threw away the elements */
- A->cols[i] = NIL(sm_col);
- dll_unlink(pcol, A->first_col, A->last_col,
- next_col, prev_col, A->ncols);
- pcol->first_row = pcol->last_row = NIL(sm_element);
- sm_col_free(pcol);
- }
-}
-
-void
-sm_copy_row(dest, dest_row, prow)
-register sm_matrix *dest;
-int dest_row;
-sm_row *prow;
-{
- register sm_element *p;
-
- for(p = prow->first_col; p != 0; p = p->next_col) {
- (void) sm_insert(dest, dest_row, p->col_num);
- }
-}
-
-
-void
-sm_copy_col(dest, dest_col, pcol)
-register sm_matrix *dest;
-int dest_col;
-sm_col *pcol;
-{
- register sm_element *p;
-
- for(p = pcol->first_row; p != 0; p = p->next_row) {
- (void) sm_insert(dest, dest_col, p->row_num);
- }
-}
-
-
-sm_row *
-sm_longest_row(A)
-sm_matrix *A;
-{
- register sm_row *large_row, *prow;
- register int max_length;
-
- max_length = 0;
- large_row = NIL(sm_row);
- for(prow = A->first_row; prow != 0; prow = prow->next_row) {
- if (prow->length > max_length) {
- max_length = prow->length;
- large_row = prow;
- }
- }
- return large_row;
-}
-
-
-sm_col *
-sm_longest_col(A)
-sm_matrix *A;
-{
- register sm_col *large_col, *pcol;
- register int max_length;
-
- max_length = 0;
- large_col = NIL(sm_col);
- for(pcol = A->first_col; pcol != 0; pcol = pcol->next_col) {
- if (pcol->length > max_length) {
- max_length = pcol->length;
- large_col = pcol;
- }
- }
- return large_col;
-}
-
-int
-sm_num_elements(A)
-sm_matrix *A;
-{
- register sm_row *prow;
- register int num;
-
- num = 0;
- sm_foreach_row(A, prow) {
- num += prow->length;
- }
- return num;
-}
-
-int
-sm_read(fp, A)
-FILE *fp;
-sm_matrix **A;
-{
- int i, j, err;
-
- *A = sm_alloc();
- while (! feof(fp)) {
- err = fscanf(fp, "%d %d", &i, &j);
- if (err == EOF) {
- return 1;
- } else if (err != 2) {
- return 0;
- }
- (void) sm_insert(*A, i, j);
- }
- return 1;
-}
-
-
-int
-sm_read_compressed(fp, A)
-FILE *fp;
-sm_matrix **A;
-{
- int i, j, k, nrows, ncols;
- unsigned long x;
-
- *A = sm_alloc();
- if (fscanf(fp, "%d %d", &nrows, &ncols) != 2) {
- return 0;
- }
- sm_resize(*A, nrows, ncols);
-
- for(i = 0; i < nrows; i++) {
- if (fscanf(fp, "%lx", &x) != 1) {
- return 0;
- }
- for(j = 0; j < ncols; j += 32) {
- if (fscanf(fp, "%lx", &x) != 1) {
- return 0;
- }
- for(k = j; x != 0; x >>= 1, k++) {
- if (x & 1) {
- (void) sm_insert(*A, i, k);
- }
- }
- }
- }
- return 1;
-}
-
-
-void
-sm_write(fp, A)
-FILE *fp;
-sm_matrix *A;
-{
- register sm_row *prow;
- register sm_element *p;
-
- for(prow = A->first_row; prow != 0; prow = prow->next_row) {
- for(p = prow->first_col; p != 0; p = p->next_col) {
- (void) fprintf(fp, "%d %d\n", p->row_num, p->col_num);
- }
- }
-}
-
-void
-sm_print(fp, A)
-FILE *fp;
-sm_matrix *A;
-{
- register sm_row *prow;
- register sm_col *pcol;
- int c;
-
- if (A->last_col->col_num >= 100) {
- (void) fprintf(fp, " ");
- for(pcol = A->first_col; pcol != 0; pcol = pcol->next_col) {
- (void) fprintf(fp, "%d", (pcol->col_num / 100)%10);
- }
- putc('\n', fp);
- }
-
- if (A->last_col->col_num >= 10) {
- (void) fprintf(fp, " ");
- for(pcol = A->first_col; pcol != 0; pcol = pcol->next_col) {
- (void) fprintf(fp, "%d", (pcol->col_num / 10)%10);
- }
- putc('\n', fp);
- }
-
- (void) fprintf(fp, " ");
- for(pcol = A->first_col; pcol != 0; pcol = pcol->next_col) {
- (void) fprintf(fp, "%d", pcol->col_num % 10);
- }
- putc('\n', fp);
-
- (void) fprintf(fp, " ");
- for(pcol = A->first_col; pcol != 0; pcol = pcol->next_col) {
- (void) fprintf(fp, "-");
- }
- putc('\n', fp);
-
- for(prow = A->first_row; prow != 0; prow = prow->next_row) {
- (void) fprintf(fp, "%3d:", prow->row_num);
-
- for(pcol = A->first_col; pcol != 0; pcol = pcol->next_col) {
- c = sm_row_find(prow, pcol->col_num) ? '1' : '.';
- putc(c, fp);
- }
- putc('\n', fp);
- }
-}
-
-
-void
-sm_dump(A, s, max)
-sm_matrix *A;
-char *s;
-int max;
-{
- FILE *fp = stdout;
-
- (void) fprintf(fp, "%s %d rows by %d cols\n", s, A->nrows, A->ncols);
- if (A->nrows < max) {
- sm_print(fp, A);
- }
-}
-
-void
-sm_cleanup()
-{
-#ifdef FAST_AND_LOOSE
- register sm_element *p, *pnext;
- register sm_row *prow, *pnextrow;
- register sm_col *pcol, *pnextcol;
-
- for(p = sm_element_freelist; p != 0; p = pnext) {
- pnext = p->next_col;
- FREE(p);
- }
- sm_element_freelist = 0;
-
- for(prow = sm_row_freelist; prow != 0; prow = pnextrow) {
- pnextrow = prow->next_row;
- FREE(prow);
- }
- sm_row_freelist = 0;
-
- for(pcol = sm_col_freelist; pcol != 0; pcol = pnextcol) {
- pnextcol = pcol->next_col;
- FREE(pcol);
- }
- sm_col_freelist = 0;
-#endif
-}