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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
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