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-/*
-*+
-* Name:
-* palGalsup
-
-* Purpose:
-* Convert from galactic to supergalactic coordinates
-
-* Language:
-* Starlink ANSI C
-
-* Type of Module:
-* Library routine
-
-* Invocation:
-* void palGalsup ( double dl, double db, double *dsl, double *dsb );
-
-* Arguments:
-* dl = double (Given)
-* Galactic longitude.
-* db = double (Given)
-* Galactic latitude.
-* dsl = double * (Returned)
-* Supergalactic longitude.
-* dsb = double * (Returned)
-* Supergalactic latitude.
-
-* Description:
-* Transformation from IAU 1958 galactic coordinates to
-* de Vaucouleurs supergalactic coordinates.
-
-* Authors:
-* PTW: Pat Wallace (STFC)
-* TIMJ: Tim Jenness (JAC, Hawaii)
-* {enter_new_authors_here}
-
-* See Also:
-* - de Vaucouleurs, de Vaucouleurs, & Corwin, Second Reference
-* Catalogue of Bright Galaxies, U. Texas, page 8.
-* - Systems & Applied Sciences Corp., Documentation for the
-* machine-readable version of the above catalogue,
-* Contract NAS 5-26490.
-*
-* (These two references give different values for the galactic
-* longitude of the supergalactic origin. Both are wrong; the
-* correct value is L2=137.37.)
-
-* History:
-* 2012-02-12(TIMJ):
-* Initial version with documentation taken from Fortran SLA
-* Adapted with permission from the Fortran SLALIB library.
-* {enter_further_changes_here}
-
-* Copyright:
-* Copyright (C) 1999 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 palGalsup ( double dl, double db, double *dsl, double *dsb ) {
-
- double v1[3];
- double v2[3];
-
-/*
-* System of supergalactic coordinates:
-*
-* SGL SGB L2 B2 (deg)
-* - +90 47.37 +6.32
-* 0 0 - 0
-*
-* Galactic to supergalactic rotation matrix:
-*/
- double rmat[3][3] = {
- { -0.735742574804,+0.677261296414,+0.000000000000 },
- { -0.074553778365,-0.080991471307,+0.993922590400 },
- { +0.673145302109,+0.731271165817,+0.110081262225 }
- };
-
- /* Spherical to Cartesian */
- eraS2c( dl, db, v1 );
-
- /* Galactic to Supergalactic */
- eraRxp( rmat, v1, v2 );
-
- /* Cartesian to spherical */
- eraC2s( v2, dsl, dsb );
-
- /* Express in conventional ranges */
- *dsl = eraAnp( *dsl );
- *dsb = eraAnpm( *dsb );
-
-}