C
C There are a total of 2 entries in the algebraic variable array.
C There are a total of 4 entries in each of the rate and state variable arrays.
C There are a total of 12 entries in the constant variable array.
C
C
C CONSTS(1) is n1_initial in component component (dimensionless).
C CONSTS(2) is d1_initial in component component (dimensionless).
C CONSTS(3) is n2_initial in component component (dimensionless).
C CONSTS(4) is d2_initial in component component (dimensionless).
C STATES(1) is n in component component (dimensionless).
C STATES(2) is d in component component (dimensionless).
C STATES(3) is n in component component (dimensionless).
C STATES(4) is d in component component (dimensionless).
C ALGBRC(1) is cell_1_neighbourhood_d_average in component component (dimensionless).
C ALGBRC(2) is cell_2_neighbourhood_d_average in component component (dimensionless).
C CONSTS(5) is start_boundary_d in component component (dimensionless).
C CONSTS(6) is a in component component (dimensionless).
C CONSTS(7) is b in component component (dimensionless).
C CONSTS(8) is v in component component (dimensionless).
C CONSTS(9) is k in component component (dimensionless).
C CONSTS(10) is h in component component (dimensionless).
C VOI is time in component component (dimensionless).
C CONSTS(11) is start_boundary_d in component component (dimensionless).
C CONSTS(12) is end_boundary_d in component component (dimensionless).
C RATES(1) is d/dt n in component component (dimensionless).
C RATES(2) is d/dt d in component component (dimensionless).
C RATES(3) is d/dt n in component component (dimensionless).
C RATES(4) is d/dt d in component component (dimensionless).
C
      SUBROUTINE initConsts(CONSTS, RATES, STATES)
      REAL CONSTS(*), RATES(*), STATES(*)
      CONSTS(1) = 1.0
      CONSTS(2) = 1.0
      CONSTS(3) = 0.99
      CONSTS(4) = 0.99
      CONSTS(5) = 0.0
      CONSTS(6) = 0.01
      CONSTS(7) = 100
      CONSTS(8) = 1
      CONSTS(9) = 2
      CONSTS(10) = 2
      CONSTS(11) = 0.0
      CONSTS(12) = 0.0
      STATES(1) = CONSTS(1)
      STATES(2) = CONSTS(2)
      STATES(3) = CONSTS(3)
      STATES(4) = CONSTS(4)
      RETURN
      END
      SUBROUTINE computeRates(VOI, CONSTS,  RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      RATES(2) =  CONSTS(8)*(1.00000/(1.00000+ CONSTS(7)*STATES(1) ** CONSTS(10)) - STATES(2))
      RATES(4) =  CONSTS(8)*(1.00000/(1.00000+ CONSTS(7)*STATES(3) ** CONSTS(10)) - STATES(4))
      ALGBRC(1) =  (STATES(4)+CONSTS(5))*0.500000
      RATES(1) = ALGBRC(1) ** CONSTS(9)/(CONSTS(6)+ALGBRC(1) ** CONSTS(9)) - STATES(1)
      ALGBRC(2) =  (STATES(2)+CONSTS(12))*0.500000
      RATES(3) = ALGBRC(2) ** CONSTS(9)/(CONSTS(6)+ALGBRC(2) ** CONSTS(9)) - STATES(3)
      RETURN
      END
      SUBROUTINE computeVariables(VOI, CONSTS, RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(1) =  (STATES(4)+CONSTS(5))*0.500000
      ALGBRC(2) =  (STATES(2)+CONSTS(12))*0.500000
      RETURN
      END