PWF (Present Worth Function) is an economic function that provides the present worth of a series of N future payments which inflate at rate Interest per period.

 

The format of the function is

 

     PWF(N, Interest, Discount)

 

where

      N is the number of periods (e.g., years) considered in the economic analysis.

      Interest is the interest rate  (expressed as a fraction) per period.

      Discount is the market discount rate (expressed as a fraction) per period.

 

PWF is an example of an EES external function written as a dynamic link library file.  External functions can be written in C++,DELPHI, or other compiled languages.

 

See the on-line help for details