module mo_indprd
      use shr_kind_mod, only : r8 => shr_kind_r8
      private
      public :: indprd
      contains
      subroutine indprd( class, prod, nprod, y, extfrc, rxt, ncol )
      use chem_mods, only : gas_pcnst, extcnt, rxntot
      use ppgrid, only : pver
      implicit none
!--------------------------------------------------------------------
! ... dummy arguments
!--------------------------------------------------------------------
      integer, intent(in) :: class
      integer, intent(in) :: ncol
      integer, intent(in) :: nprod
      real(r8), intent(in) :: y(ncol,pver,gas_pcnst)
      real(r8), intent(in) :: rxt(ncol,pver,rxntot)
      real(r8), intent(in) :: extfrc(ncol,pver,extcnt)
      real(r8), intent(inout) :: prod(ncol,pver,nprod)
!--------------------------------------------------------------------
! ... "independent" production for Explicit species
!--------------------------------------------------------------------
      if( class == 1 ) then
         prod(:,:,1) = 0._r8
         prod(:,:,2) =rxt(:,:,113)*y(:,:,10)*y(:,:,8)
         prod(:,:,3) = (rxt(:,:,17) +rxt(:,:,18) +rxt(:,:,135)*y(:,:,11) + &
                 rxt(:,:,136)*y(:,:,22) +rxt(:,:,137)*y(:,:,2) + &
                 rxt(:,:,161)*y(:,:,27) +rxt(:,:,184)*y(:,:,36))*y(:,:,18) &
                  + extfrc(:,:,3)
         prod(:,:,4) =rxt(:,:,18)*y(:,:,18) +rxt(:,:,143)*y(:,:,23)*y(:,:,21) &
                  +rxt(:,:,20)*y(:,:,59)
         prod(:,:,5) = 0._r8
         prod(:,:,6) = 0._r8
         prod(:,:,7) = 0._r8
         prod(:,:,8) = 0._r8
         prod(:,:,9) = 0._r8
         prod(:,:,10) = 0._r8
         prod(:,:,11) = 0._r8
         prod(:,:,12) = 0._r8
         prod(:,:,13) = 0._r8
         prod(:,:,14) = 0._r8
         prod(:,:,15) = 0._r8
         prod(:,:,16) = 0._r8
         prod(:,:,17) = 0._r8
!--------------------------------------------------------------------
! ... "independent" production for Implicit species
!--------------------------------------------------------------------
      else if( class == 4 ) then
         prod(:,:,42) = 0._r8
         prod(:,:,32) = (rxt(:,:,46) +rxt(:,:,74))*y(:,:,51) +.180_r8*rxt(:,:,48) &
                 *y(:,:,15)
         prod(:,:,36) =rxt(:,:,5)*y(:,:,7)
         prod(:,:,29) = 0._r8
         prod(:,:,3) = 0._r8
         prod(:,:,2) = 0._r8
         prod(:,:,22) = (rxt(:,:,58) +.800_r8*rxt(:,:,61) +rxt(:,:,70) + &
                 .800_r8*rxt(:,:,73)) + extfrc(:,:,9)
         prod(:,:,33) = + extfrc(:,:,1)
         prod(:,:,35) = + extfrc(:,:,2)
         prod(:,:,38) =.660_r8*rxt(:,:,48)*y(:,:,15) + extfrc(:,:,11)
         prod(:,:,39) = 0._r8
         prod(:,:,17) = 0._r8
         prod(:,:,9) = 0._r8
         prod(:,:,7) = 0._r8
         prod(:,:,23) =rxt(:,:,47)*y(:,:,15) +rxt(:,:,36)*y(:,:,41) +rxt(:,:,43) &
                 *y(:,:,42)
         prod(:,:,8) = 0._r8
         prod(:,:,27) =.180_r8*rxt(:,:,48)*y(:,:,15)
         prod(:,:,28) =rxt(:,:,47)*y(:,:,15)
         prod(:,:,37) = 0._r8
         prod(:,:,14) = 0._r8
         prod(:,:,26) =.050_r8*rxt(:,:,48)*y(:,:,15)
         prod(:,:,40) =rxt(:,:,36)*y(:,:,41) +3.000_r8*rxt(:,:,39)*y(:,:,43) &
                  +2.000_r8*rxt(:,:,40)*y(:,:,44) +3.000_r8*rxt(:,:,41)*y(:,:,45) &
                  +rxt(:,:,42)*y(:,:,46) +4.000_r8*rxt(:,:,37)*y(:,:,47) &
                  +3.000_r8*rxt(:,:,38)*y(:,:,48) +rxt(:,:,45)*y(:,:,50)
         prod(:,:,5) = 0._r8
         prod(:,:,31) = 0._r8
         prod(:,:,4) = 0._r8
         prod(:,:,1) = 0._r8
         prod(:,:,41) = 0._r8
         prod(:,:,24) = 0._r8
         prod(:,:,25) = 0._r8
         prod(:,:,6) = 0._r8
         prod(:,:,34) =rxt(:,:,43)*y(:,:,42) +rxt(:,:,44)*y(:,:,49) +rxt(:,:,45) &
                 *y(:,:,50)
         prod(:,:,30) = 0._r8
         prod(:,:,16) = 0._r8
         prod(:,:,18) = 0._r8
         prod(:,:,13) = 0._r8
         prod(:,:,15) = (rxt(:,:,54) +rxt(:,:,66)) + extfrc(:,:,7)
         prod(:,:,19) = + extfrc(:,:,5)
         prod(:,:,10) = (rxt(:,:,58) +rxt(:,:,59) +rxt(:,:,70) +rxt(:,:,71)) &
                  + extfrc(:,:,6)
         prod(:,:,11) = + extfrc(:,:,4)
         prod(:,:,20) = 0._r8
         prod(:,:,12) = (rxt(:,:,59) +1.200_r8*rxt(:,:,61) +rxt(:,:,71) + &
                 1.200_r8*rxt(:,:,73)) + extfrc(:,:,8)
         prod(:,:,21) = (rxt(:,:,54) +rxt(:,:,58) +rxt(:,:,59) +rxt(:,:,66) + &
                 rxt(:,:,70) +rxt(:,:,71)) + extfrc(:,:,10)
      end if
      end subroutine indprd
      end module mo_indprd