toss.c

来自「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」· C语言 代码 · 共 40 行

/*  toss.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 toss(float prob, int seed)
{
	long double temp1;
	unsigned int temp2;
	long int h;
	h = time(NULL);

	srand( (unsigned int) (h/2) + rand()/128 + seed);

	temp1 = (long double) prob;
	temp1 *= RAND_MAX;
	temp2 = (unsigned int)temp1;

	return( (rand() < temp2) ? 1 : 0);
}