mirror of https://gitlab.com/QEF/q-e.git
50 lines
1.5 KiB
Fortran
50 lines
1.5 KiB
Fortran
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!
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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 openfil_pp()
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!----------------------------------------------------------------------------
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!
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! ... This routine opens all files needed to the self consistent run,
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! ... sets various file names, units, record lengths
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!
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USE kinds, ONLY : DP
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USE io_global, ONLY : stdout
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USE basis, ONLY : natomwfc
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USE wvfct, ONLY : nbnd, npwx
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USE ldaU, ONLY : lda_plus_U
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use control_flags, only: twfcollect
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USE io_files, ONLY : prefix, &
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iunat, iunwfc, &
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iunigk, nwordwfc, nwordatwfc
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USE mp_global, ONLY : kunit
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USE noncollin_module, ONLY : npol
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!
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IMPLICIT NONE
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!
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LOGICAL :: exst
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INTEGER :: ndr, kunittmp, ierr
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REAL(DP) :: edum(1,1), wdum(1,1)
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twfcollect=.false.
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!
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! ... nwordwfc is the record length for the direct-access file
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! ... containing wavefunctions
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!
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nwordwfc = 2 * nbnd * npwx * npol
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!
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CALL diropn( iunwfc, 'wfc', nwordwfc, exst )
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!
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IF ( .NOT. exst ) THEN
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call errore ('openfil_pp','file '//TRIM( prefix )//'.wfc'//' not found',1)
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END IF
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!
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RETURN
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!
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END SUBROUTINE openfil_pp
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