C
C There are a total of 5 entries in the algebraic variable array.
C There are a total of 1 entries in each of the rate and state variable arrays.
C There are a total of 28 entries in the constant variable array.
C
C
C VOI is time in component environment (second).
C CONSTS(1) is k_p1 in component SERCA (second_order_rate_constant).
C CONSTS(2) is k_p2 in component SERCA (first_order_rate_constant).
C CONSTS(3) is k_p3 in component SERCA (first_order_rate_constant).
C CONSTS(4) is k_m1 in component SERCA (first_order_rate_constant).
C CONSTS(5) is k_m2 in component SERCA (second_order_rate_constant).
C CONSTS(6) is k_m3 in component SERCA (second_order_rate_constant).
C CONSTS(19) is kdatp in component SERCA (millimolar).
C CONSTS(7) is kdcai in component SERCA (millimolar).
C CONSTS(8) is kdcasr in component SERCA (millimolar).
C CONSTS(9) is kdh1 in component SERCA (millimolar).
C CONSTS(10) is kdhi in component SERCA (millimolar_squared).
C CONSTS(11) is kdhsr in component SERCA (millimolar_squared).
C CONSTS(12) is kdh in component SERCA (millimolar).
C CONSTS(13) is n in component SERCA (dimensionless).
C CONSTS(14) is Ca_i in component SERCA (millimolar).
C CONSTS(15) is Ca_sr in component SERCA (millimolar).
C CONSTS(16) is H_i in component SERCA (millimolar).
C STATES(1) is ATP in component SERCA (millimolar).
C CONSTS(17) is ADP in component SERCA (millimolar).
C CONSTS(18) is P_i in component SERCA (millimolar).
C ALGBRC(1) is T_ATP in component SERCA (dimensionless).
C CONSTS(20) is T_Cai in component SERCA (dimensionless).
C CONSTS(21) is T_Casr in component SERCA (dimensionless).
C CONSTS(22) is T_H1 in component SERCA (dimensionless).
C CONSTS(23) is T_Hi in component SERCA (dimensionless).
C CONSTS(24) is T_Hsr in component SERCA (dimensionless).
C CONSTS(25) is T_H in component SERCA (dimensionless).
C ALGBRC(2) is a_p1 in component SERCA (first_order_rate_constant).
C CONSTS(26) is a_p2 in component SERCA (first_order_rate_constant).
C CONSTS(27) is a_m1 in component SERCA (first_order_rate_constant).
C ALGBRC(3) is a_m2 in component SERCA (first_order_rate_constant).
C ALGBRC(4) is s2 in component SERCA (first_order_rate_constant).
C ALGBRC(5) is v_cycle in component SERCA (first_order_rate_constant).
C RATES(1) is d/dt ATP in component SERCA (millimolar).
C
      SUBROUTINE initConsts(CONSTS, RATES, STATES)
      REAL CONSTS(*), RATES(*), STATES(*)
      CONSTS(1) = 25900
      CONSTS(2) = 2540
      CONSTS(3) = 20.5
      CONSTS(4) = 2
      CONSTS(5) = 67200
      CONSTS(6) = 149
      CONSTS(7) = 0.9
      CONSTS(8) = 2.24
      CONSTS(9) = 1.09e-5
      CONSTS(10) = 3.54e-3
      CONSTS(11) = 1.05e-8
      CONSTS(12) = 7.24e-5
      CONSTS(13) = 2
      CONSTS(14) = 1e-3
      CONSTS(15) = 1
      CONSTS(16) = 1e-4
      STATES(1) = 0.01
      CONSTS(17) = 20e-3
      CONSTS(18) = 1
      CONSTS(19) = CONSTS(4)/CONSTS(1)
      CONSTS(20) = CONSTS(14)/CONSTS(7)
      CONSTS(27) = 0.100000
      CONSTS(21) = CONSTS(15)/CONSTS(8)
      CONSTS(22) = CONSTS(16)/CONSTS(9)
      CONSTS(23) = CONSTS(16) ** CONSTS(13)/CONSTS(10)
      CONSTS(24) = CONSTS(16) ** CONSTS(13)/CONSTS(11)
      CONSTS(25) = CONSTS(16)/CONSTS(12)
      CONSTS(26) = ( CONSTS(3)*CONSTS(24))/( CONSTS(24)*(1.00000+CONSTS(25))+ CONSTS(25)*(1.00000+CONSTS(21) ** 2.00000))
      CONSTS(27) = ( CONSTS(5)*CONSTS(17)*CONSTS(21) ** 2.00000*CONSTS(25))/( CONSTS(24)*(1.00000+CONSTS(25))+ CONSTS(25)*(1.00000+CONSTS(21) ** 2.00000))
      RETURN
      END
      SUBROUTINE computeRates(VOI, CONSTS,  RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      RATES(1) = CONSTS(27)
      RETURN
      END
      SUBROUTINE computeVariables(VOI, CONSTS, RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(1) = STATES(1)/CONSTS(19)
      ALGBRC(2) = ( CONSTS(2)*ALGBRC(1)*CONSTS(20) ** 2.00000)/( ALGBRC(1)*CONSTS(20) ** 2.00000+ CONSTS(23)*(1.00000+ ALGBRC(1)*(1.00000+CONSTS(22)+CONSTS(20) ** 2.00000)))
      ALGBRC(3) = ( CONSTS(6)*CONSTS(18)*CONSTS(23))/( ALGBRC(1)*CONSTS(20) ** 2.00000+ CONSTS(23)*(1.00000+ ALGBRC(1)*(1.00000+CONSTS(22)+CONSTS(20) ** 2.00000)))
      ALGBRC(4) = ALGBRC(2)+CONSTS(26)+CONSTS(27)+ALGBRC(3)
      ALGBRC(5) = ( ALGBRC(2)*CONSTS(26) -  CONSTS(27)*ALGBRC(3))/ALGBRC(4)
      RETURN
      END