public void reduce(BigInteger x)
{
if (x == null)
{
return;
}
x.divRemTo(this.m, null, x);
}
// xR mod m
public BigInteger convert(BigInteger x)
{
if (x == null)
{
return null;
}
BigInteger r = new BigInteger();
x.abs().dlShiftTo(this.m.t, r);
r.divRemTo(this.m, null, r);
if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0)
{
this.m.subTo(r, r);
}
return r;
}