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/*------------------------------------------------------------------------
*
* geqo_misc.c
* misc. printout and debug stuff
*
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/optimizer/geqo/geqo_misc.c,v 1.39 2003/08/04 02:39:59 momjian Exp $
*
*-------------------------------------------------------------------------
*/
/* 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"
#include "nodes/print.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 poplulation. */
/* 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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