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diff --git a/ast/pal/palPrenut.c b/ast/pal/palPrenut.c
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-/*
-*+
-* Name:
-* palPrenut
-
-* Purpose:
-* Form the matrix of bias-precession-nutation (IAU 2006/2000A)
-
-* Language:
-* Starlink ANSI C
-
-* Type of Module:
-* Library routine
-
-* Invocation:
-* void palPrenut( double epoch, double date, double rmatpn[3][3] )
-
-* Arguments:
-* epoch = double (Returned)
-* Julian epoch for mean coordinates.
-* date = double (Returned)
-* Modified Julian Date (JD-2400000.5) for true coordinates.
-* rmatpn = double[3][3] (Returned)
-* combined NPB matrix
-
-* Description:
-* Form the matrix of bias-precession-nutation (IAU 2006/2000A).
-* The epoch and date are TT (but TDB is usually close enough).
-* The matrix is in the sense v(true) = rmatpn * v(mean).
-
-* Authors:
-* PTW: Pat Wallace (STFC)
-* {enter_new_authors_here}
-
-* History:
-* 2012-02-10 (PTW):
-* Initial version.
-* Adapted with permission from the Fortran SLALIB library.
-* {enter_further_changes_here}
-
-* Copyright:
-* 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 "palmac.h"
-#include "pal1sofa.h"
-
-void palPrenut ( double epoch, double date, double rmatpn[3][3] ){
-
-/* Local Variables: */
- double bpa;
- double bpia;
- double bqa;
- double chia;
- double d1;
- double d2;
- double eps0;
- double epsa;
- double gam;
- double oma;
- double pa;
- double phi;
- double pia;
- double psi;
- double psia;
- double r1[3][3];
- double r2[3][3];
- double thetaa;
- double za;
- double zetaa;
-
-/* Specified Julian epoch as a 2-part JD. */
- eraEpj2jd( epoch, &d1, &d2 );
-
-/* P matrix, from specified epoch to J2000.0. */
- eraP06e( d1, d2, &eps0, &psia, &oma, &bpa, &bqa, &pia, &bpia, &epsa,
- &chia, &za, &zetaa, &thetaa, &pa, &gam, &phi, &psi );
- eraIr( r1 );
- eraRz( -chia, r1 );
- eraRx( oma, r1 );
- eraRz( psia, r1 );
- eraRx( -eps0, r1 );
-
-/* NPB matrix, from J2000.0 to date. */
- eraPnm06a( PAL__MJD0, date, r2 );
-
-/* NPB matrix, from specified epoch to date. */
- eraRxr( r2, r1, rmatpn );
-}