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+/* Copyright 2006-2008 MySQL AB, 2008-2009 Sun Microsystems, 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; version 2 of the License.
+
+ 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, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
+
+#ifndef FILESORT_INCLUDED
+#define FILESORT_INCLUDED
+
+class SQL_SELECT;
+
+#include "my_global.h" /* uint, uchar */
+#include "my_base.h" /* ha_rows */
+
+class SQL_SELECT;
+class THD;
+struct TABLE;
+typedef struct st_sort_field SORT_FIELD;
+
+ha_rows filesort(THD *thd, TABLE *table, st_sort_field *sortorder,
+ uint s_length, SQL_SELECT *select,
+ ha_rows max_rows, bool sort_positions,
+ ha_rows *examined_rows);
+void filesort_free_buffers(TABLE *table, bool full);
+void change_double_for_sort(double nr,uchar *to);
+
+#endif /* FILESORT_INCLUDED */