
                      FFTPACK

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

                  version 4  april 1985

     a package of fortran subprograms for the fast fourier
      transform of periodic and other symmetric sequences

                         by

                  paul n swarztrauber

  national center for atmospheric research  boulder,colorado 80307

   which is sponsored by the national science foundation

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

