Public Domain Aeronautical Software (PDAS)  

The archive file rspline.zip contains the files:

lar13694.txt the original program description from COSMIC
readme.txt general description
ratspl.f90 the complete source code in modern Fortran
example1.f90 example program #1
example2.f90 example program #2
example1.out output from running example1
example2.out output from running example2
original.src the original copy of the source code (from COSMIC)

This is not a program, but a collection of subroutines that may be called by a driver program. Two test programs are shown to illustrate the procedures.

Public Domain Aeronautical Software (PDAS)