You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#include <config.h>
#include "case.h"
#include "val.h"
#include "alloc.h"
#include "str.h"
+#include "var.h"
#ifdef GLOBAL_DEBUGGING
#undef NDEBUG
}
#endif /* GLOBAL_DEBUGGING */
+/* Resizes case C from OLD_CNT to NEW_CNT values. */
+void
+case_resize (struct ccase *c, size_t old_cnt, size_t new_cnt)
+{
+ struct ccase new;
+
+ case_create (&new, new_cnt);
+ case_copy (&new, 0, c, 0, old_cnt < new_cnt ? old_cnt : new_cnt);
+ case_swap (&new, c);
+ case_destroy (&new);
+}
+
+/* Swaps cases A and B. */
+void
+case_swap (struct ccase *a, struct ccase *b)
+{
+ struct case_data *t = a->case_data;
+ a->case_data = b->case_data;
+ b->case_data = t;
+}
+
/* Attempts to create C as a new case that holds VALUE_CNT
values. Returns nonzero if successful, zero if memory
allocation failed. */
}
#endif /* GLOBAL_DEBUGGING */
+/* Compares the values of the VAR_CNT variables in VP
+ in cases A and B and returns a strcmp()-type result. */
+int
+case_compare (const struct ccase *a, const struct ccase *b,
+ struct variable *const *vp, size_t var_cnt)
+{
+ return case_compare_2dict (a, b, vp, vp, var_cnt);
+}
+
+/* Compares the values of the VAR_CNT variables in VAP in case CA
+ to the values of the VAR_CNT variables in VBP in CB
+ and returns a strcmp()-type result. */
+int
+case_compare_2dict (const struct ccase *ca, const struct ccase *cb,
+ struct variable *const *vap, struct variable *const *vbp,
+ size_t var_cnt)
+{
+ for (; var_cnt-- > 0; vap++, vbp++)
+ {
+ const struct variable *va = *vap;
+ const struct variable *vb = *vbp;
+
+ assert (va->type == vb->type);
+ assert (va->width == vb->width);
+
+ if (va->width == 0)
+ {
+ double af = case_num (ca, va->fv);
+ double bf = case_num (cb, vb->fv);
+
+ if (af != bf)
+ return af > bf ? 1 : -1;
+ }
+ else
+ {
+ const char *as = case_str (ca, va->fv);
+ const char *bs = case_str (cb, vb->fv);
+ int cmp = memcmp (as, bs, va->width);
+
+ if (cmp != 0)
+ return cmp;
+ }
+ }
+ return 0;
+}
+
/* Returns a pointer to the array of `union value's used for C.
The caller must *not* modify the returned data.