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Diffstat (limited to 'ast/pal/palGeoc.c')
-rw-r--r-- | ast/pal/palGeoc.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/ast/pal/palGeoc.c b/ast/pal/palGeoc.c deleted file mode 100644 index 9954d92..0000000 --- a/ast/pal/palGeoc.c +++ /dev/null @@ -1,83 +0,0 @@ -/* -*+ -* Name: -* palGeoc - -* Purpose: -* Convert geodetic position to geocentric - -* Language: -* Starlink ANSI C - -* Type of Module: -* Library routine - -* Invocation: -* void palGeoc( double p, double h, double * r, double *z ); - -* Arguments: -* p = double (Given) -* latitude (radians) -* h = double (Given) -* height above reference spheroid (geodetic, metres) -* r = double * (Returned) -* distance from Earth axis (AU) -* z = double * (Returned) -* distance from plane of Earth equator (AU) - -* Description: -* Convert geodetic position to geocentric. - -* Authors: -* PTW: Patrick T. Wallace -* TIMJ: Tim Jenness (JAC, Hawaii) -* {enter_new_authors_here} - -* Notes: -* - Geocentric latitude can be obtained by evaluating atan2(z,r) -* - Uses WGS84 reference ellipsoid and calls eraGd2gc - -* History: -* 2012-03-01 (TIMJ): -* Initial version moved from palOne2One -* Adapted with permission from the Fortran SLALIB library. -* {enter_further_changes_here} - -* Copyright: -* Copyright (C) 2004 Patrick T. Wallace -* 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 palGeoc ( double p, double h, double *r, double *z ) { - double xyz[3]; - const double elong = 0.0; /* Use zero longitude */ - const double AU = 1.49597870E11; - /* WGS84 looks to be the closest match */ - eraGd2gc( ERFA_WGS84, elong, p, h, xyz ); - *r = xyz[0] / (AU * cos(elong) ); - *z = xyz[2] / AU; -} |