shiftRight method
Implementation
LexoInteger shiftRight([int times = 1]) {
if (mag.length - times <= 0) {
return LexoInteger.zero(sys);
}
final nmag = List<int>.filled(mag.length - times, 0);
lexoHelper.arrayCopy(mag, times, nmag, 0, nmag.length);
return LexoInteger.make(sys, sign, nmag);
}