public void ArcTan(uint multiplicand, uint reciprocal)
{
var x = new BigNumber(this.maxDigits, multiplicand);
x.Divide(reciprocal);
reciprocal *= reciprocal;
Assign(x);
var term = new BigNumber(this.maxDigits);
var divisor = 1u;
var subtractTerm = true;
while (true)
{
x.Divide(reciprocal);
term.Assign(x);
divisor += 2;
term.Divide(divisor);
if (term.IsZero())
{
break;
}
if (subtractTerm)
{
Subtract(term);
}
else
{
Add(term);
}
subtractTerm = !subtractTerm;
}
}
