APPENDIX C: HANKEL FUNCTION PARAMETERS 



This appendix gives the FORTRAN statements for two programs associated with the 

 modified Hankel functions. Program PWRTRN computes the power series coefficients, dj^, 

 from eq (57), then determines the truncation points from eq (59). The truncation points 

 for the other three sets of coefficients can be determined by changing line 9. Different com- 

 puter word lengths can be accommodated by changing line 16. 



The second program, CFC, determines the asymptotic series coefficients Cj^ from 

 eq (72), then determines the continued fraction coefficients as indicated by eq (81)-(83). 

 The second set of coefficients can be determined by changing the 4 in line 1 1 to a 1 6. 



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