// TODO: put this somewhere else...
public static void printRow(
String name, Rational value, ColumnTextWriter colpp, boolean excludeZero) {
if (!value.isZero() || !excludeZero) {
colpp.writeCol(name);
colpp.writeCol(value.toString());
if (!BigIntegerUtils.one(value.den)) {
colpp.writeCol(String.format("%.3f", value.doubleValue()));
}
colpp.endRow();
}
}
public int compareTo(Rational other) {
if (num.equals(other.num) && den.equals(other.den)) return 0;
// see if it is a num only compare...
if (den.equals(other.den)) return (greater(other.num, this.num)) ? -1 : 1;
// check signs...
if ((zero(num) || negative(num)) && positive(other.num)) return -1;
else if (positive(num) && (zero(other.num) || negative(other.num))) return 1;
BigInteger c1 = new BigInteger(other.num.toString());
BigInteger c2 = new BigInteger(other.den.toString());
Rational c = new Rational(c1, c2);
c = c.negate();
c.addEq(this);
return (c.isZero() ? 0 : (negative(c.num) ? -1 : 1));
}