From 5e45211a64149b3c659b90ff2de6fa982a5a93ed Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 4 May 2024 14:17:33 +0200
Subject: Adding upstream version 15.5.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/backend/optimizer/geqo/geqo_misc.c | 132 +++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/backend/optimizer/geqo/geqo_misc.c

(limited to 'src/backend/optimizer/geqo/geqo_misc.c')

diff --git a/src/backend/optimizer/geqo/geqo_misc.c b/src/backend/optimizer/geqo/geqo_misc.c
new file mode 100644
index 0000000..890ac36
--- /dev/null
+++ b/src/backend/optimizer/geqo/geqo_misc.c
@@ -0,0 +1,132 @@
+/*------------------------------------------------------------------------
+ *
+ * geqo_misc.c
+ *	   misc. printout and debug stuff
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/backend/optimizer/geqo/geqo_misc.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/* contributed by:
+   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
+   *  Martin Utesch				 * Institute of Automatic Control	   *
+   =							 = University of Mining and Technology =
+   *  utesch@aut.tu-freiberg.de  * Freiberg, Germany				   *
+   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
+ */
+
+#include "postgres.h"
+
+#include "optimizer/geqo_misc.h"
+
+
+#ifdef GEQO_DEBUG
+
+
+/*
+ * avg_pool
+ */
+static double
+avg_pool(Pool *pool)
+{
+	int			i;
+	double		cumulative = 0.0;
+
+	if (pool->size <= 0)
+		elog(ERROR, "pool_size is zero");
+
+	/*
+	 * Since the pool may contain multiple occurrences of DBL_MAX, divide by
+	 * pool->size before summing, not after, to avoid overflow.  This loses a
+	 * little in speed and accuracy, but this routine is only used for debug
+	 * printouts, so we don't care that much.
+	 */
+	for (i = 0; i < pool->size; i++)
+		cumulative += pool->data[i].worth / pool->size;
+
+	return cumulative;
+}
+
+/* print_pool
+ */
+void
+print_pool(FILE *fp, Pool *pool, int start, int stop)
+{
+	int			i,
+				j;
+
+	/* be extra careful that start and stop are valid inputs */
+
+	if (start < 0)
+		start = 0;
+	if (stop > pool->size)
+		stop = pool->size;
+
+	if (start + stop > pool->size)
+	{
+		start = 0;
+		stop = pool->size;
+	}
+
+	for (i = start; i < stop; i++)
+	{
+		fprintf(fp, "%d)\t", i);
+		for (j = 0; j < pool->string_length; j++)
+			fprintf(fp, "%d ", pool->data[i].string[j]);
+		fprintf(fp, "%g\n", pool->data[i].worth);
+	}
+
+	fflush(fp);
+}
+
+/* print_gen
+ *
+ *	 printout for chromosome: best, worst, mean, average
+ */
+void
+print_gen(FILE *fp, Pool *pool, int generation)
+{
+	int			lowest;
+
+	/* Get index to lowest ranking gene in population. */
+	/* Use 2nd to last since last is buffer. */
+	lowest = pool->size > 1 ? pool->size - 2 : 0;
+
+	fprintf(fp,
+			"%5d | Best: %g  Worst: %g  Mean: %g  Avg: %g\n",
+			generation,
+			pool->data[0].worth,
+			pool->data[lowest].worth,
+			pool->data[pool->size / 2].worth,
+			avg_pool(pool));
+
+	fflush(fp);
+}
+
+
+void
+print_edge_table(FILE *fp, Edge *edge_table, int num_gene)
+{
+	int			i,
+				j;
+
+	fprintf(fp, "\nEDGE TABLE\n");
+
+	for (i = 1; i <= num_gene; i++)
+	{
+		fprintf(fp, "%d :", i);
+		for (j = 0; j < edge_table[i].unused_edges; j++)
+			fprintf(fp, " %d", edge_table[i].edge_list[j]);
+		fprintf(fp, "\n");
+	}
+
+	fprintf(fp, "\n");
+
+	fflush(fp);
+}
+
+#endif							/* GEQO_DEBUG */
-- 
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