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1 files changed, 55 insertions, 0 deletions

diff --git a/src/slalib/dtf2d.f b/src/slalib/dtf2d.f
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+      SUBROUTINE sla_DTF2D (IHOUR, IMIN, SEC, DAYS, J)
+*+
+*     - - - - - -
+*      D T F 2 D
+*     - - - - - -
+*
+*  Convert hours, minutes, seconds to days (double precision)
+*
+*  Given:
+*     IHOUR       int       hours
+*     IMIN        int       minutes
+*     SEC         dp        seconds
+*
+*  Returned:
+*     DAYS        dp        interval in days
+*     J           int       status:  0 = OK
+*                                    1 = IHOUR outside range 0-23
+*                                    2 = IMIN outside range 0-59
+*                                    3 = SEC 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   July 1984
+*
+*  Copyright (C) 1995 Rutherford Appleton Laboratory
+*-
+
+      IMPLICIT NONE
+
+      INTEGER IHOUR,IMIN
+      DOUBLE PRECISION SEC,DAYS
+      INTEGER J
+
+*  Seconds per day
+      DOUBLE PRECISION D2S
+      PARAMETER (D2S=86400D0)
+
+
+
+*  Preset status
+      J=0
+
+*  Validate sec, min, hour
+      IF (SEC.LT.0D0.OR.SEC.GE.60D0) J=3
+      IF (IMIN.LT.0.OR.IMIN.GT.59) J=2
+      IF (IHOUR.LT.0.OR.IHOUR.GT.23) J=1
+
+*  Compute interval
+      DAYS=(60D0*(60D0*DBLE(IHOUR)+DBLE(IMIN))+SEC)/D2S
+
+      END