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74 lines
2.0 KiB
Fortran
74 lines
2.0 KiB
Fortran
SUBROUTINE sla_CTF2D (IHOUR, IMIN, SEC, DAYS, J)
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*+
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* - - - - - -
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* C T F 2 D
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* - - - - - -
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*
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* Convert hours, minutes, seconds to days (single precision)
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*
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* Given:
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* IHOUR int hours
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* IMIN int minutes
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* SEC real seconds
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*
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* Returned:
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* DAYS real interval in days
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* J int status: 0 = OK
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* 1 = IHOUR outside range 0-23
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* 2 = IMIN outside range 0-59
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* 3 = SEC outside range 0-59.999...
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*
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* Notes:
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*
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* 1) The result is computed even if any of the range checks
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* fail.
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*
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* 2) The sign must be dealt with outside this routine.
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*
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* P.T.Wallace Starlink November 1984
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*
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* Copyright (C) 1995 Rutherford Appleton Laboratory
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*
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* License:
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program (see SLA_CONDITIONS); if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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*-
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IMPLICIT NONE
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INTEGER IHOUR,IMIN
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REAL SEC,DAYS
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INTEGER J
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* Seconds per day
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REAL D2S
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PARAMETER (D2S=86400.0)
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* Preset status
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J=0
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* Validate sec, min, hour
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IF (SEC.LT.0.0.OR.SEC.GE.60.0) J=3
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IF (IMIN.LT.0.OR.IMIN.GT.59) J=2
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IF (IHOUR.LT.0.OR.IHOUR.GT.23) J=1
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* Compute interval
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DAYS=(60.0*(60.0*REAL(IHOUR)+REAL(IMIN))+SEC)/D2S
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END
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