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/*
*+
* Name:
* palDjcal
* Purpose:
* Modified Julian Date to Gregorian Calendar
* Language:
* Starlink ANSI C
* Type of Module:
* Library routine
* Invocation:
* void palDjcal ( int ndp, double djm, int iymdf[4], int *j );
* Arguments:
* ndp = int (Given)
* Number of decimal places of days in fraction.
* djm = double (Given)
* Modified Julian Date (JD-2400000.5)
* iymdf[4] = int[] (Returned)
* Year, month, day, fraction in Gregorian calendar.
* j = status (Returned)
* 0 = OK. See eraJd2cal for other values.
* Description:
* Modified Julian Date to Gregorian Calendar, expressed
* in a form convenient for formatting messages (namely
* rounded to a specified precision, and with the fields
* stored in a single array)
* Authors:
* PTW: Pat Wallace (STFC)
* TIMJ: Tim Jenness (JAC, Hawaii)
* {enter_new_authors_here}
* History:
* 2012-02-10 (TIMJ):
* Initial version with documentation taken from Fortran SLA
* Adapted with permission from the Fortran SLALIB library.
* {enter_further_changes_here}
* Notes:
* - Uses eraJd2cal
* 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 <math.h>
#include "pal.h"
#include "palmac.h"
#include "pal1sofa.h"
void palDjcal ( int ndp, double djm, int iymdf[4], int *j ) {
double frac = 0.0;
double nfd;
*j = eraJd2cal( PAL__MJD0, djm, &(iymdf[0]),
&(iymdf[1]), &(iymdf[2]),
&frac);
/* Convert ndp to a power of 10 */
nfd = pow( 10., (double)ndp );
/* Multiply the fraction */
frac *= nfd;
/* and now we want to round to the nearest integer */
iymdf[3] = (int)DNINT(frac);
}
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