region_gen.c

一个不错的GA-NN的神经网络模型的示范代码。适合入门学习

/*  region_gen.c */

/* 	Copyright 2004 Oswaldo Morizaki */

/* 	This file is part of ga-nn-ag.

    ga-nn-ag 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; either version 2 of the License, or
    (at your option) any later version.

    ga-nn-ag 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 ga-nn-ag; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "my_header.h"
#include "aux_prot.h"

int region_gen(float **vertice)
{
	float x1,x2,y1,y2;
	pid_t pid;
	
	pid=getpid();
		
	x1=rand_gen((int) pid);
	y1=rand_gen((int) pid);
	x2=rand_gen((int) pid+1);
	y2=rand_gen((int) pid+2);
/*
	if ( (1.0 - x1) > 0.5 )
	{
		x2 = x1 + (1.0 - pow(10000,-rand_gen((int) pid+1) ))*(1.0 - x1);
	}
	else 
	{
		x2 = x1 - (1.0 - pow(10000,-rand_gen((int) pid+1) ))*(x1);
	}

	if ( (1.0 - y1) > 0.5)
	{
		y2 = y1 + (1.0 - pow(10000,-rand_gen((int) pid+1) ))*(1.0 - y1);
	}
	else 
	{
		y2 = y1 - (1.0 - pow(10000,-rand_gen((int) pid+1) ))*(y1);
	}
*/
	vertice[0][0] = (x1 > x2) ? x2 : x1;
	vertice[0][1] = (y1 > y2) ? y2 : y1;
	vertice[1][0] = (x1 > x2) ? x1 : x2;
	vertice[1][1] = (y1 > y2) ? y1 : y2;

	return(1);
}