@Override
public int compareTo(HugeInteger value) {
HugeIntegerImpl other = (HugeIntegerImpl) value;
if (this.sign != other.sign) return this.sign > other.sign ? 1 : -1;
switch (this.sign) {
case 1:
return compareMagnitude(other.magnitude);
case -1:
return other.compareMagnitude(this.magnitude);
default:
return 0;
}
}
@Override
public HugeInteger subtract(HugeInteger value) {
HugeIntegerImpl other = (HugeIntegerImpl) value;
if (other.sign == 0) return this;
if (this.sign == 0) return other.negate();
if (this.sign != other.sign)
return new HugeIntegerImpl(this.sign, add(this.magnitude, other.magnitude));
int compare = compareMagnitude(other.magnitude);
if (compare == 0) return ZERO;
int resultSign = compare * this.sign;
int[] resultMagnitude =
(compare > 0)
? subtract(this.magnitude, other.magnitude)
: subtract(other.magnitude, this.magnitude);
return new HugeIntegerImpl(resultSign, resultMagnitude);
}