Java implemenation of Bruce J. Colling's Parallel Random Number generator 
                       (see Collings, 1987 JASA)                           



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 *                                                                           
 * For each individual random stream, random numbers are produced by
 * using one generator to randomly select one of NUMGEN generators to
 * produce the requested random number.  Each generator is multiplicative
 * congruential with the multiplicative constants selected randomly with
 * replacement from a pool of 112 "good" constants.  This (virtually)
 * assures that the random stream for each processor is independent.
 * Each stream should have a period of length 4.6E18.  
 *                                                                           
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 * Modification Log:                                                         
 *                                                                           
 * January 4, 1997 -- Initial revision - Gregory R. Warnes                   
 *                                                                           
 * June 28, 1999   -- Initial Java Version - Gregory R Warnes                
 *                                                                           
 * $Log: package.html,v $
 * Revision 1.1.1.1  2001/04/04 17:16:37  warneg
 * Initial checkin of Hydra formatted for distribution.
 *
 *
 * Revision 1.1.1.1  1999/09/21 17:10:07  warnes
 * initial
 *
 * Revision 1.2  1999/07/07 13:49:40  warnes
 *  - Modified PRNGAdministrator class to return PRNGStates rather than
 *    returning an instance of the PRNG.
 *  - Created a Factory, PRNGFactory, that uses reflectance to instantiate
 *    the correct class using the PRNGState.
 *  - Modified PRNGState to include a method that returns the fully-qualified
 *    class name to make instantiation possible.
 *  - Changed (almost) all "private" declarations to "package".
 *
 * Revision 1.1  1999/07/02 21:34:58  warnes
 * *** empty log message ***
 *
 * Revision 1.4  1999/07/02 18:13:01  warnes
 * Renamed class Constants to class CollingsPRNGConstants
 *
 * Revision 1.3  1999/07/02 17:50:52  warnes
 * added semicolon to package declaration; began converting comments to javadoc
 *
 * Revision 1.2  1999/07/02 17:25:15  warnes
 * added package declaration to all files; added PseudoRandomUnivariate interface to return doubles
 *
 * Revision 1.1.1.1  1999/07/02 15:55:24  warnes
 * Random number generator administrator and utilities and variable generators that will go in to omegahat later
 *
 * Revision 1.1.1.1  1999/07/02 15:53:47  warnes
 * Random number generator administrator and utilities and variable generators that will go in to omegahat later
 *
 * Revision 1.2  1999/07/01 14:14:18  warnes
 * Modified to use LinearCongruential PRNG instead of
 * StatelessLinearCongruential PRNG for intialization.  This corrected
 * intializing all generators exactly the same!
 *
 * Revision 1.1  1999/07/01 13:42:29  warnes
 * Initial revision
 *
 * Revision 1.2  1999/06/30 20:35:07  warnes
 * *** empty log message ***
 *
 ****************************************************************************/


/* NOTE: Only ONE instance of the Administrator should be instantiated. */