c**** TOUPPER
c
      subroutine toupper(string)
c
c----CAMx v7Beta6 190902
c
c-----------------------------------------------------------------------
c    Description:
c-----------------------------------------------------------------------
c
c      Converts the string to upper case.
c
c     Copyright 1996 - 2018
c     Ramboll
c
c       Argument description:
c         Inputs:
c           string  C  string to convert
c
c-----------------------------------------------------------------------
c    LOG:
c-----------------------------------------------------------------------
c
c     08/16/98   --gwilson--    Original development
c
c-----------------------------------------------------------------------
c    Include files:
c-----------------------------------------------------------------------
c
c-----------------------------------------------------------------------
c    Argument declaration:
c-----------------------------------------------------------------------
c
      character*(*) string
c
c-----------------------------------------------------------------------
c    Local variables:
c-----------------------------------------------------------------------
c
      character*26 lower, upper
      integer idx, i
c
c-----------------------------------------------------------------------
c    Data statments:
c-----------------------------------------------------------------------
c
      data lower /'abcdefghijklmnopqrstuvwxyz'/
      data upper /'ABCDEFGHIJKLMNOPQRSTUVWXYZ'/
c
c-----------------------------------------------------------------------
c    Entry point:
c-----------------------------------------------------------------------
c
      do i=1,LEN( string )
         idx = INDEX( lower, string(i:i) )
         if( idx .GT. 0 ) string(i:i) = upper(idx:idx)
      enddo
c
c-----------------------------------------------------------------------
c    Return point:
c-----------------------------------------------------------------------
c
      return
      end