From d54fe7c1f704a63824c5bfa0ece65245572e9b27 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 4 Mar 2015 21:21:30 -0500
Subject: Initial commit

---
 src/slalib/daf2r.f | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 src/slalib/daf2r.f

(limited to 'src/slalib/daf2r.f')

diff --git a/src/slalib/daf2r.f b/src/slalib/daf2r.f
new file mode 100644
index 0000000..3f89864
--- /dev/null
+++ b/src/slalib/daf2r.f
@@ -0,0 +1,55 @@
+      SUBROUTINE sla_DAF2R (IDEG, IAMIN, ASEC, RAD, J)
+*+
+*     - - - - - -
+*      D A F 2 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
+*-
+
+      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
-- 
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