/**************************************************************************
 *
 * random.h -- pseudo random number generator
 * Copyright (C) 1994  Chris Wallace (csw@bruce.cs.monash.edu.au)
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: random.h 3745 2003-02-20 21:20:24Z mdewsnip $
 *
 **************************************************************************/

/*
$Log$
Revision 1.1  2003/02/20 21:14:16  mdewsnip
Addition of MG package for search and retrieval

Revision 1.1  1999/08/10 21:16:58  sjboddie
renamed mg-1.3d directory mg

Revision 1.1  1998/11/17 09:32:21  rjmcnab
*** empty log message ***

*/

#ifndef RANDOM_H
#define RANDOM_H

/*
 *	A random number generator called as a function by
 *	random (iseed)	or	irandm (iseed)
 *	The parameter should be a pointer to a 2-element long vector.
 *	The first function returns a double uniform in 0 .. 1.
 *	The second returns a long integer uniform in 0 .. 2**31-1
 *	Both update iseed[] in exactly the same way.
 *	iseed[] must be a 2-element integer vector.
 *	The initial value of the second element may be anything.
 *
 *	The period of the random sequence is 2**32 * (2**32-1)
 *	The table mt[0:127] is defined by mt[i] = 69069 ** (128-i)
 */

double random (long is [2]);
long irandm (long is [2]);

#endif