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| author | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
|---|---|---|
| committer | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
| commit | 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 (patch) | |
| tree | 4464880c571602d54f6ae114729bf62a89518057 /math/slalib/caldj.f | |
| download | iraf-osx-40e5a5811c6ffce9b0974e93cdd927cbcf60c157.tar.gz | |
Repatch (from linux) of OSX IRAF
Diffstat (limited to 'math/slalib/caldj.f')
| -rw-r--r-- | math/slalib/caldj.f | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/math/slalib/caldj.f b/math/slalib/caldj.f new file mode 100644 index 00000000..34104ca8 --- /dev/null +++ b/math/slalib/caldj.f @@ -0,0 +1,75 @@ + SUBROUTINE slCADJ (IY, IM, ID, DJM, J) +*+ +* - - - - - - +* C A D J +* - - - - - - +* +* Gregorian Calendar to Modified Julian Date +* +* (Includes century default feature: use slCLDJ for years +* before 100AD.) +* +* Given: +* IY,IM,ID int year, month, day in Gregorian calendar +* +* Returned: +* DJM dp modified Julian Date (JD-2400000.5) for 0 hrs +* J int status: +* 0 = OK +* 1 = bad year (MJD not computed) +* 2 = bad month (MJD not computed) +* 3 = bad day (MJD computed) +* +* Acceptable years are 00-49, interpreted as 2000-2049, +* 50-99, " " 1950-1999, +* 100 upwards, interpreted literally. +* +* Called: slCLDJ +* +* P.T.Wallace Starlink November 1985 +* +* Copyright (C) 1995 Rutherford Appleton Laboratory +* +* License: +* This program is free software; you can redistribute it and/or modify +* it under the terms of the GNU General Public License as published by +* the Free Software Foundation; either version 2 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 General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with this program (see SLA_CONDITIONS); if not, write to the +* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, +* Boston, MA 02110-1301 USA +* +* Copyright (C) 1995 Association of Universities for Research in Astronomy Inc. +*- + + IMPLICIT NONE + + INTEGER IY,IM,ID + DOUBLE PRECISION DJM + INTEGER J + + INTEGER NY + + + + +* Default century if appropriate + IF (IY.GE.0.AND.IY.LE.49) THEN + NY=IY+2000 + ELSE IF (IY.GE.50.AND.IY.LE.99) THEN + NY=IY+1900 + ELSE + NY=IY + END IF + +* Modified Julian Date + CALL slCLDJ(NY,IM,ID,DJM,J) + + END |