CHECK_FILE.f90

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!    Copyright (C) 2012 The SPEED FOUNDATION
!    Author: Ilario Mazzieri
!
!    This file is part of SPEED.
!
!    SPEED is free software; you can redistribute it and/or modify it
!    under the terms of the GNU Affero General Public License as
!    published by the Free Software Foundation, either version 3 of the
!    License, or (at your option) any later version.
!
!    SPEED is distributed in the hope that it will be useful, but
!    WITHOUT ANY WARRANTY; without even the implied warranty of
!    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
!    Affero General Public License for more details.
!
!    You should have received a copy of the GNU Affero General Public License
!    along with SPEED.  If not, see <http://www.gnu.org/licenses/>.
 
 
     subroutine check_file(filename,err_out)
      
      character*70 :: filename
 
      logical*4 :: f_ex
 
      integer*4 :: err_out     
      integer*4 :: i,file_a,file_b
      
      do i=1,70
        if (filename(i:i).ne.' ') exit
      enddo
      
      file_a=i
      do i=70,1,-1
        if (filename(i:i).ne.' ') exit
      enddo
      file_b=i
      
      f_ex=.false. 
      err_out=0
      inquire (file=filename,exist=f_ex)
      if (f_ex) then
        continue
      else
        err_out = 101
 
      endif
      
      return
      
      end subroutine check_file