public void TestNper()
{
double f, r, y, p, x, n;
bool t = false;
r = 0; y = 7; p = 2; f = 3; t = false;
n = FinanceLib.nper(r, y, p, f, t);
x = -0.71428571429; // can you believe it? excel returns nper as a fraction!??
Assert.AreEqual(x, n, 0.0000000001);
// cross check with pv
r = 1; y = 100; p = -109.66796875; f = 10000; t = false;
n = FinanceLib.nper(r, y, p, f, t);
x = 10;
Assert.AreEqual(x, n, 0.01);
r = 1; y = 100; p = -209.5703125; f = 10000; t = true;
n = FinanceLib.nper(r, y, p, f, t);
x = 10;
Assert.AreEqual(x, n, 0.1);
// cross check with fv
r = 2; y = 120; f = -6409178400d; p = 12000; t = false;
n = FinanceLib.nper(r, y, p, f, t);
x = 12;
Assert.AreEqual(x, n, "nper ");
r = 2; y = 120; f = -6472951200d; p = 12000; t = true;
n = FinanceLib.nper(r, y, p, f, t);
x = 12;
Assert.AreEqual(x, n, "nper ");
}
public override double Evaluate(double rate, double arg1, double arg2, double arg3, bool type)
{
return(FinanceLib.nper(rate, arg1, arg2, arg3, type));
}