Random.cs

      private int InternalSample() {
          int retVal; 
          int locINext = inext;
          int locINextp = inextp; 
 
          if (++locINext >=56) locINext=1;
          if (++locINextp>= 56) locINextp = 1; 

          retVal = SeedArray[locINext]-SeedArray[locINextp];

          if (retVal == MBIG) retVal--; 
          if (retVal<0) retVal+=MBIG;
 
          SeedArray[locINext]=retVal; 

          inext = locINext; 
          inextp = locINextp;

          return retVal;
      }