code: public static long[] cycleLeftI(long[] v, int shift, int len) {
      long[] t = copy(v, len, shift);
      return orI(shiftRightI(v, len - shift), truncateI(t, len));
    }
docs: Cycle a bitstring to the right.
  
  @param v Bit string
  @param shift Number of steps to cycle
  @param len Length