mirror of https://gitlab.com/QEF/q-e.git
64 lines
1.4 KiB
Fortran
64 lines
1.4 KiB
Fortran
!
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! Copyright (C) 2001-2003 PWSCF group
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! This file is distributed under the terms of the
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! GNU General Public License. See the file `License'
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! in the root directory of the present distribution,
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! or http://www.gnu.org/copyleft/gpl.txt .
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!
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!
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!-----------------------------------------------------------------------
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SUBROUTINE d3_recover (ilab, isw)
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!-----------------------------------------------------------------------
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!
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! isw = +1 Writes d3dyn in a file for possible recover
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! isw = -1 Starts a recover run
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!
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USE pwcom
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USE phcom
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USE d3com
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USE io_global, ONLY : ionode
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USE mp, ONLY: mp_bcast
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!
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IMPLICIT NONE
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!
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INTEGER :: ilab, isw
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INTEGER :: root = 0
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LOGICAL :: exst
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iunrec = 98
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IF (isw.EQ.1) THEN
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!
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IF ( .NOT. ionode ) RETURN
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CALL seqopn (iunrec, 'recv_d3', 'unformatted', exst)
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IF (ilab.LE.4) THEN
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WRITE (iunrec) ilab
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ELSE
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WRITE (iunrec) ilab, d3dyn
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ENDIF
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CLOSE (unit = iunrec, status = 'keep')
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ELSEIF (isw.EQ. - 1) THEN
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!
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IF ( ionode ) THEN
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!
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CALL seqopn (iunrec, 'recv_d3', 'unformatted', exst)
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READ (iunrec) ilab
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IF (ilab.GE.5) THEN
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REWIND (iunrec)
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READ (iunrec) ilab, d3dyn
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ENDIF
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!
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CLOSE (unit = iunrec, status = 'keep')
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!
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END IF
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!
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CALL mp_bcast (d3dyn, root)
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CALL mp_bcast (ilab, root)
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!
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ENDIF
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RETURN
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END SUBROUTINE d3_recover
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