-/* Sort direction. */
-enum sort_direction
- {
- SRT_ASCEND, /* A, B, C, ..., X, Y, Z. */
- SRT_DESCEND /* Z, Y, X, ..., C, B, A. */
- };
-
-/* A sort criterion. */
-struct sort_criterion
- {
- int fv; /* Variable data index. */
- int width; /* 0=numeric, otherwise string width. */
- enum sort_direction dir; /* Sort direction. */
- };
-
-/* A set of sort criteria. */
-struct sort_criteria
- {
- struct sort_criterion *crits;
- size_t crit_cnt;
- };
-
-
-void sort_destroy_criteria (struct sort_criteria *);
-
-struct casefile *sort_execute (struct casereader *,
- const struct sort_criteria *);
-
-int sort_active_file_in_place (const struct sort_criteria *);
-
-struct casefile *sort_active_file_to_casefile (const struct sort_criteria *);
-
-#endif /* !sort_h */