Function:     bessi

Purpose:      Evaluate Modified Bessel function of integer order.

Category:     MATH

File:         bessel.c

Author:       M.G.R. Vogelaar

Use:          #include "bessel.h"
              double   result; 
              result = bessi( int n,
                              double x )


              bessi    Return the Modified  Bessel function Iv(x) of 
                       integer order for input value x.
              n        Integer order of Bessel function.
              x        Double at which the function is evaluated.

                      
Description:  bessy evaluates at x the Modified Bessel function of 
              integer order n.
              This routine is NOT callable in FORTRAN.

Updates:      Jun 29, 1998: VOG, Document created.