1 files changed, 54 insertions, 0 deletions
diff --git a/src/backend/optimizer/geqo/geqo_copy.c b/src/backend/optimizer/geqo/geqo_copy.c
new file mode 100644
index 0000000..62302f4
--- /dev/null
+++ b/src/backend/optimizer/geqo/geqo_copy.c
@@ -0,0 +1,54 @@
+/*------------------------------------------------------------------------
+ *
+ * geqo_copy.c
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/backend/optimizer/geqo/geqo_copy.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/* contributed by:
+   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
+   *  Martin Utesch				 * Institute of Automatic Control	   *
+   =							 = University of Mining and Technology =
+   *  utesch@aut.tu-freiberg.de  * Freiberg, Germany				   *
+   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
+ */
+
+/* this is adopted from D. Whitley's Genitor algorithm */
+
+/*************************************************************/
+/*															 */
+/*	Copyright (c) 1990										 */
+/*	Darrell L. Whitley										 */
+/*	Computer Science Department								 */
+/*	Colorado State University								 */
+/*															 */
+/*	Permission is hereby granted to copy all or any part of  */
+/*	this program for free distribution.   The author's name  */
+/*	and this copyright notice must be included in any copy.  */
+/*															 */
+/*************************************************************/
+
+#include "postgres.h"
+#include "optimizer/geqo_copy.h"
+
+/* geqo_copy
+ *
+ *	 copies one gene to another
+ *
+ */
+void
+geqo_copy(PlannerInfo *root, Chromosome *chromo1, Chromosome *chromo2,
+		  int string_length)
+{
+	int			i;
+
+	for (i = 0; i < string_length; i++)
+		chromo1->string[i] = chromo2->string[i];
+
+	chromo1->worth = chromo2->worth;
+}