function cmn(q, a, b, x, s, t)
{
  return add(rol(add(add(a, q), add(x, t)), s), b);
}
function cmn(q, a, b, x, s, t)
{
  return add(rol(add(add(a, q), add(x, t)), s), b);
}
function cmn ( q , a , b , x , s , t ) { return add ( rol ( add ( add ( a , q ) , add ( x , t ) ) , s ) , b ) ; }
/*
These functions implement the basic operation for each round of the
algorithm.
/ * These functions implement the basic operation for each round of the algorithm .