1 files changed, 0 insertions, 90 deletions
diff --git a/src/backend/optimizer/geqo/geqo_selection.c b/src/backend/optimizer/geqo/geqo_selection.c
deleted file mode 100644
index ae4cbbf426f..00000000000
--- a/src/backend/optimizer/geqo/geqo_selection.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * geqo_selection.c
- *	  linear selection scheme for the genetic query optimizer
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * $Id: geqo_selection.c,v 1.13 2002/06/20 20:29:29 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-
-/* 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 <math.h>
-
-#include "postgres.h"
-#include "optimizer/geqo_copy.h"
-#include "optimizer/geqo_random.h"
-#include "optimizer/geqo_selection.h"
-
-static int	linear(int max, double bias);
-
-/* geqo_selection
- *
- *	 according to bias described by input parameters,
- *	 second genes are selected from the pool
- */
-void
-geqo_selection(Chromosome *momma, Chromosome *daddy, Pool *pool, double bias)
-{
-	int			first,
-				second;
-
-	first = (int) linear(pool->size, bias);
-	second = (int) linear(pool->size, bias);
-
-	if (pool->size > 1)
-	{
-		while (first == second)
-			second = (int) linear(pool->size, bias);
-	}
-
-	geqo_copy(momma, &pool->data[first], pool->string_length);
-	geqo_copy(daddy, &pool->data[second], pool->string_length);
-}
-
-/* linear
- *	  generates random integer between 0 and input max number
- *	  using input linear bias
- *
- *	  probability distribution function is: f(x) = bias - 2(bias - 1)x
- *			 bias = (prob of first rule) / (prob of middle rule)
- *
- */
-
-static int
-linear(int pool_size, double bias)		/* bias is y-intercept of linear
-										 * distribution */
-{
-	double		index;			/* index between 0 and pop_size */
-	double		max = (double) pool_size;
-
-	index = max * (bias - sqrt((bias * bias) - 4.0 * (bias - 1.0) * geqo_rand()))
-		/ 2.0 / (bias - 1.0);
-
-	return (int) index;
-}