--- /dev/null
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef SORT_CRITERIA_H
+#define SORT_CRITERIA_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+struct dictionary;
+struct lexer;
+struct variable;
+struct subcase;
+
+bool parse_sort_criteria (struct lexer *, const struct dictionary *,
+ struct subcase *, const struct variable ***vars,
+ bool *saw_direction);
+
+
+#endif /* sort-criteria.h */