C
C There are a total of 1 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 4 entries in the constant variable array.
C
C
C VOI is time in component environment (second).
C STATES(1) is x1 in component insulin (nanomolar).
C ALGBRC(1) is scatchard in component insulin (dimensionless).
C CONSTS(1) is k1 in component rate_constants (second_order_rate_constant).
C CONSTS(2) is k1_ in component rate_constants (first_order_rate_constant).
C CONSTS(3) is k2_ in component rate_constants (first_order_rate_constant).
C STATES(2) is x2 in component unbound_receptor (nanomolar).
C STATES(3) is x3 in component single_bound_receptor (nanomolar).
C STATES(4) is x4 in component double_bound_receptor (nanomolar).
C CONSTS(4) is k2 in component rate_constants (second_order_rate_constant).
C RATES(1) is d/dt x1 in component insulin (nanomolar).
C RATES(2) is d/dt x2 in component unbound_receptor (nanomolar).
C RATES(3) is d/dt x3 in component single_bound_receptor (nanomolar).
C RATES(4) is d/dt x4 in component double_bound_receptor (nanomolar).
C
      SUBROUTINE initConsts(CONSTS, RATES, STATES)
      REAL CONSTS(*), RATES(*), STATES(*)
      STATES(1) = 1000
      CONSTS(1) = 1000000
      CONSTS(2) = 0.0004
      CONSTS(3) = 0.04
      STATES(2) = 0.1
      STATES(3) = 0.0
      STATES(4) = 0.0
      CONSTS(4) = 1000000
      RETURN
      END
      SUBROUTINE computeRates(VOI, CONSTS,  RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      RATES(1) = (( CONSTS(2)*STATES(3) -  CONSTS(1)*STATES(1)*STATES(2))+ CONSTS(3)*STATES(4)) -  CONSTS(4)*STATES(1)*STATES(3)
      RATES(2) =  CONSTS(2)*STATES(3) -  CONSTS(1)*STATES(1)*STATES(2)
      RATES(3) = (( CONSTS(1)*STATES(1)*STATES(2) -  CONSTS(2)*STATES(3))+ CONSTS(3)*STATES(4)) -  CONSTS(4)*STATES(1)*STATES(3)
      RATES(4) =  CONSTS(4)*STATES(1)*STATES(3) -  CONSTS(3)*STATES(4)
      RETURN
      END
      SUBROUTINE computeVariables(VOI, CONSTS, RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(1) = (STATES(3)+STATES(4))/STATES(1)
      RETURN
      END