package umontreal.iro.lecuyer.randvar;
import umontreal.iro.lecuyer.rng.*;
import umontreal.iro.lecuyer.probdist.*;


/**
 * This class implements random variate generators with the symmetrical
 * beta distribution with shape parameters  
 * α = β,
 * over the interval  (0, 1). 
 * 
 */
public class BetaSymmetricalGen extends BetaGen  {



   /**
    * Creates a new symmetrical beta generator with parameters α = 
    *   alpha, over the interval (0, 1), using stream s.
    * 
    */
   public BetaSymmetricalGen (RandomStream s, double alpha)  {
      this (s, new BetaSymmetricalDist (alpha));
   }


   /**
    * Creates a new generator for the distribution dist,
    *      using stream s.
    * 
    */
   public BetaSymmetricalGen (RandomStream s, BetaSymmetricalDist dist)  {
      super (s, dist);
   }


   public static double nextDouble (RandomStream s, double alpha) {
      return BetaSymmetricalDist.inverseF (alpha, s.nextDouble());
   }

}