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!!
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!!  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
!!  GNU General Public License for more details.
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      integer function get_index(nosubs,subst,fract)
!
!     programmer : antoon koster
!     function   : returns the index for substance fract in the
!                  substance array subst(1:nosubs)
!     date       : may 2004
!
      use timers
      implicit  none
      integer, intent(in)  :: nosubs
      integer              :: lensub, lenfract
      character(len=*)     :: fract
      character(len=*)     :: subst(nosubs)

      integer :: indx, is
      integer(4) ithndl              ! handle to time this subroutine
      data       ithndl / 0 /
      if ( timon ) call timstrt( "get_index", ithndl )

      indx = -1
      do is=1,nosubs
         lensub   = len_trim(subst(is))
         lenfract = len_trim(fract)
         if (subst(is)(:lensub) == fract(:lenfract)) then
            indx = is
            exit
         endif
      enddo
      get_index = indx
      if ( timon ) call timstop ( ithndl )
      return
      end function get_index