.help ctf2d Jun99 "Slalib Package"
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      SUBROUTINE slCTFD (IHOUR, IMIN, SEC, DAYS, J)

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      C T F D
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  Convert hours, minutes, seconds to days (single precision)

  Given:
     IHOUR       int       hours
     IMIN        int       minutes
     SEC         real      seconds

  Returned:
     DAYS        real      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   November 1984

  Copyright (C) 1995 Rutherford Appleton Laboratory
  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.

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