public override double doubleValue()
{
bool neg = num.isNegative();
if (den.isZero())
{
return(neg ? Double.NegativeInfinity
: num.isZero() ? Double.NaN
: Double.PositiveInfinity);
}
IntNum n = num;
if (neg)
{
n = IntNum.neg(n);
}
int num_len = n.intLength();
int den_len = den.intLength();
int exp = 0;
if (num_len < den_len + 54)
{
exp = den_len + 54 - num_len;
n = IntNum.shift(n, exp);
exp = -exp;
}
// Divide n (which is shifted num) by den, using truncating division,
// and return quot and remainder.
IntNum quot = new IntNum();
IntNum remainder = new IntNum();
IntNum.divide(n, den, quot, remainder, TRUNCATE);
quot = quot.canonicalize();
remainder = remainder.canonicalize();
return(quot.roundToDouble(exp, neg, !remainder.isZero()));
}