C
C There are a total of 2 entries in the algebraic variable array.
C There are a total of 3 entries in each of the rate and state variable arrays.
C There are a total of 8 entries in the constant variable array.
C
C
C VOI is time in component environment (hour).
C STATES(1) is R in component R (pg_ml).
C CONSTS(1) is L_ in component R (ng_ml).
C CONSTS(2) is T_ in component R (ng_ml).
C CONSTS(3) is dR in component R (first_order_rate_constant).
C CONSTS(4) is rR in component R (ng_ml_min).
C ALGBRC(2) is H in component R (dimensionless).
C ALGBRC(1) is x in component R (dimensionless).
C STATES(2) is L in component L (ng_ml).
C STATES(3) is T in component T (ng_ml).
C CONSTS(5) is dL in component L (first_order_rate_constant).
C CONSTS(6) is rL in component L (first_order_rate_constant).
C CONSTS(7) is dT in component T (first_order_rate_constant).
C CONSTS(8) is rT in component T (first_order_rate_constant).
C RATES(1) is d/dt R in component R (pg_ml).
C RATES(2) is d/dt L in component L (ng_ml).
C RATES(3) is d/dt T in component T (ng_ml).
C
      SUBROUTINE initConsts(CONSTS, RATES, STATES)
      REAL CONSTS(*), RATES(*), STATES(*)
      STATES(1) = 0.0
      CONSTS(1) = 30.0
      CONSTS(2) = 8.0
      CONSTS(3) = 0.10
      CONSTS(4) = 0.1
      STATES(2) = 10.0
      STATES(3) = 12.0
      CONSTS(5) = 0.015
      CONSTS(6) = 5.0
      CONSTS(7) = 0.023
      CONSTS(8) = 0.01
      RETURN
      END
      SUBROUTINE computeRates(VOI, CONSTS,  RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      RATES(2) =  CONSTS(6)*STATES(1) -  CONSTS(5)*STATES(2)
      RATES(3) =  CONSTS(8)*STATES(2) -  CONSTS(7)*STATES(3)
      ALGBRC(1) = 2.00000 - (STATES(2)/CONSTS(1)+STATES(3)/CONSTS(2))
      ALGBRC(2) = TERNRY(ALGBRC(1).LT.0.00000, 0.00000, TERNRY(ALGBRC(1).EQ.0.00000, 0.500000, TERNRY(ALGBRC(1).GT.0.00000, 1.00000, 0.0/0.0)
      RATES(1) =  CONSTS(4)*ALGBRC(2) -  CONSTS(3)*STATES(1)
      RETURN
      END
      SUBROUTINE computeVariables(VOI, CONSTS, RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(1) = 2.00000 - (STATES(2)/CONSTS(1)+STATES(3)/CONSTS(2))
      ALGBRC(2) = TERNRY(ALGBRC(1).LT.0.00000, 0.00000, TERNRY(ALGBRC(1).EQ.0.00000, 0.500000, TERNRY(ALGBRC(1).GT.0.00000, 1.00000, 0.0/0.0)
      RETURN
      END
      REAL FUNCTION TERNRY(TEST, VALA, VALB)
      LOGICAL TEST
      REAL VALA, VALB
      IF (TEST) THEN
        TERNRY = VALA
      ELSE
        TERNRY = VALB
      ENDIF
      RETURN
      END