mirror of https://gitlab.com/QEF/q-e.git
57 lines
1.5 KiB
Fortran
57 lines
1.5 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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subroutine io_pattern (fildrho,nirr,npert,u,iflag)
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!---------------------------------------------------------------------
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USE io_global, ONLY : stdout
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use pwcom
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use parameters, only : DP
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#ifdef __PARA
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use para
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#endif
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implicit none
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!
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! the i/o variables first
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!
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integer :: nirr, npert(3*nat), iflag
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complex(kind=DP) :: u(3*nat,3*nat)
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character (len=*) :: fildrho ! name of the file
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character (len=256):: filname ! complete name of the file
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!
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! here the local variables
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!
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integer :: i,iunit
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logical :: exst
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if (abs(iflag).ne.1) call errore('io_pattern','wrong iflag',1+abs(iflag))
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#ifdef __PARA
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! if (iflag.eq.+1 .and. (me.ne.1.or.mypool.ne.1)) return
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#endif
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iunit = 4
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filname = trim(fildrho) //".pat"
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call seqopn(iunit,filname,'formatted',exst)
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if (iflag.gt.0) then
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WRITE( stdout,*) 'WRITING PATTERNS ON FILE ', filname
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write(iunit,*) nirr
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write(iunit,*) (npert(i),i=1,nirr)
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write(iunit,*) u
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else
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WRITE( stdout,*) 'READING PATTERNS FROM FILE ', filname
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read(iunit,*) nirr
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read(iunit,*) (npert(i),i=1,nirr)
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read(iunit,*) u
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end if
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close (iunit)
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return
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end subroutine io_pattern
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