aboutsummaryrefslogtreecommitdiff
path: root/math/slalib/daf2r.f
diff options
context:
space:
mode:
authorJoe Hunkeler <jhunkeler@gmail.com>2015-08-11 16:51:37 -0400
committerJoe Hunkeler <jhunkeler@gmail.com>2015-08-11 16:51:37 -0400
commit40e5a5811c6ffce9b0974e93cdd927cbcf60c157 (patch)
tree4464880c571602d54f6ae114729bf62a89518057 /math/slalib/daf2r.f
downloadiraf-osx-40e5a5811c6ffce9b0974e93cdd927cbcf60c157.tar.gz
Repatch (from linux) of OSX IRAF
Diffstat (limited to 'math/slalib/daf2r.f')
-rw-r--r--math/slalib/daf2r.f73
1 files changed, 73 insertions, 0 deletions
diff --git a/math/slalib/daf2r.f b/math/slalib/daf2r.f
new file mode 100644
index 00000000..ddd07b74
--- /dev/null
+++ b/math/slalib/daf2r.f
@@ -0,0 +1,73 @@
+ SUBROUTINE slDAFR (IDEG, IAMIN, ASEC, RAD, J)
+*+
+* - - - - - -
+* D A F R
+* - - - - - -
+*
+* Convert degrees, arcminutes, arcseconds to radians
+* (double precision)
+*
+* Given:
+* IDEG int degrees
+* IAMIN int arcminutes
+* ASEC dp arcseconds
+*
+* Returned:
+* RAD dp angle in radians
+* J int status: 0 = OK
+* 1 = IDEG outside range 0-359
+* 2 = IAMIN outside range 0-59
+* 3 = ASEC outside range 0-59.999...
+*
+* Notes:
+* 1) The result is computed even if any of the range checks
+* fail.
+* 2) The sign must be dealt with outside this routine.
+*
+* P.T.Wallace Starlink 23 August 1996
+*
+* Copyright (C) 1996 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 IDEG,IAMIN
+ DOUBLE PRECISION ASEC,RAD
+ INTEGER J
+
+* Arc seconds to radians
+ DOUBLE PRECISION AS2R
+ PARAMETER (AS2R=0.484813681109535994D-5)
+
+
+
+* Preset status
+ J=0
+
+* Validate arcsec, arcmin, deg
+ IF (ASEC.LT.0D0.OR.ASEC.GE.60D0) J=3
+ IF (IAMIN.LT.0.OR.IAMIN.GT.59) J=2
+ IF (IDEG.LT.0.OR.IDEG.GT.359) J=1
+
+* Compute angle
+ RAD=AS2R*(60D0*(60D0*DBLE(IDEG)+DBLE(IAMIN))+ASEC)
+
+ END