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diff --git a/ast/pal/palFk54z.c b/ast/pal/palFk54z.c
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-/*
-*+
-*  Name:
-*     palFk54z
-
-*  Purpose:
-*     Convert a J2000.0 FK5 star position to B1950.0 FK4 assuming
-*     zero proper motion and parallax.
-
-*  Language:
-*     Starlink ANSI C
-
-*  Type of Module:
-*     Library routine
-
-*  Invocation:
-*     palFk54z( double r2000, double d2000, double bepoch, double *r1950,
-*               double *d1950, double *dr1950, double *dd1950 )
-
-*  Arguments:
-*     r2000 = double (Given)
-*        J2000.0 FK5 RA (radians).
-*     d2000 = double (Given)
-*        J2000.0 FK5 Dec (radians).
-*     bepoch = double (Given)
-*         Besselian epoch (e.g. 1950.0).
-*     r1950 = double * (Returned)
-*        B1950 FK4 RA (radians) at epoch "bepoch".
-*     d1950 = double * (Returned)
-*        B1950 FK4 Dec (radians) at epoch "bepoch".
-*     dr1950 = double * (Returned)
-*        B1950 FK4 proper motion (RA) (radians/trop.yr)).
-*     dr1950 = double * (Returned)
-*        B1950 FK4 proper motion (Dec) (radians/trop.yr)).
-
-*  Description:
-*     This function converts star positions from the IAU 1976,
-*     FK5, Fricke system to the Bessel-Newcomb, FK4 system.
-
-*  Notes:
-*     - The proper motion in RA is dRA/dt rather than cos(Dec)*dRA/dt.
-*     - Conversion from Julian epoch 2000.0 to Besselian epoch 1950.0
-*     only is provided for.  Conversions involving other epochs will
-*     require use of the appropriate precession functions before and
-*     after this function is called.
-*     - The FK5 proper motions, the parallax and the radial velocity
-*      are presumed zero.
-*     - It is the intention that FK5 should be a close approximation
-*     to an inertial frame, so that distant objects have zero proper
-*     motion;  such objects have (in general) non-zero proper motion
-*     in FK4, and this function returns those fictitious proper
-*     motions.
-*     - The position returned by this function is in the B1950
-*     reference frame but at Besselian epoch BEPOCH.  For comparison
-*     with catalogues the "bepoch" argument will frequently be 1950.0.
-
-*  Authors:
-*     PTW: Pat Wallace (STFC)
-*     DSB: David Berry (JAC, Hawaii)
-*     {enter_new_authors_here}
-
-*  History:
-*     2012-02-13 (DSB):
-*        Initial version with documentation taken from Fortran SLA
-*        Adapted with permission from the Fortran SLALIB library.
-*     {enter_further_changes_here}
-
-*  Copyright:
-*     Copyright (C) 1995 Rutherford Appleton Laboratory
-*     Copyright (C) 2012 Science and Technology Facilities Council.
-*     All Rights Reserved.
-
-*  Licence:
-*     This program is free software: you can redistribute it and/or
-*     modify it under the terms of the GNU Lesser General Public
-*     License as published by the Free Software Foundation, either
-*     version 3 of the License, or (at your option) any later
-*     version.
-*
-*     This program is distributed in the hope that it will be useful,
-*     but WITHOUT ANY WARRANTY; without even the implied warranty of
-*     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-*     GNU Lesser General Public License for more details.
-*
-*     You should have received a copy of the GNU Lesser General
-*     License along with this program.  If not, see
-*     <http://www.gnu.org/licenses/>.
-
-*  Bugs:
-*     {note_any_bugs_here}
-*-
-*/
-
-#include "pal.h"
-#include "pal1sofa.h"
-
-void palFk54z( double r2000, double d2000, double bepoch, double *r1950,
-               double *d1950, double *dr1950, double *dd1950 ){
-
-/* Local Variables: */
-   double r, d, px, rv, y;
-
-/* FK5 equinox J2000 (any epoch) to FK4 equinox B1950 epoch B1950. */
-   palFk524( r2000, d2000, 0.0, 0.0, 0.0, 0.0, &r, &d, dr1950, dd1950,
-             &px, &rv );
-
-/* Fictitious proper motion to epoch "bepoch". */
-   y = bepoch - 1950.0;
-   *r1950 = r + *dr1950*y;
-   *d1950 = d + *dd1950*y;
-
-}
-