Sets or retrieve the page width or length.

Evaluates the periodic payment for an investment.

Solves a system of one-dimensional time-dependent partial differential equations using a moving-grid interface.

Evaluates the Poisson distribution function.

Performs a polynomial least-squares regression.

Evaluates the present value of an investment.

Evaluates the present value for a schedule of cash flows that is not necessarily periodic.

Evaluates the previous coupon date before the settlement date.

Evaluates the price per $100 face value of a security that pays periodic interest.

Evaluates the price per $100 face value of a security that pays interest at maturity.

Evaluates the payment on the principal for a given period.

Evaluates the derivative of the log gamma function.

Evaluates the second derivative of the log gamma function.