/**
* Calculates the multiplication (*) of this rational number and the specified argument.
*
* <p>This is functionally identical to
* <code>this.multiply(BigRational.valueOf(value))</code>
* but slightly faster.</p>
*
* <p>The result has no loss of precision.</p>
*
* @param value the {@link BigInteger} to multiply
* @return the resulting rational number
*/
public BigRational multiply(BigInteger value)
{
if (isZero() || value.signum() == 0)
{
return(ZERO);
}
if (equals(ONE))
{
return(valueOf(value));
}
if (value.equals(BigInteger.ONE))
{
return(this);
}
return(multiply(new BigDecimal(value)));
}
public static object BIDivide(BigInteger n, BigInteger d)
{
if (d.Equals(BigIntegerZero))
throw new ArithmeticException("Divide by zero");
BigInteger gcd = n.gcd(d);
if (gcd.Equals(BigIntegerZero))
return 0;
n = n.divide(gcd);
d = d.divide(gcd);
if (d.Equals(BigIntegerOne))
return reduce(n);
return new Ratio((d.signum() < 0 ? n.negate() : n),
(d.signum() < 0 ? d.negate() : d));
}
