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C
C There are a total of 18 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 14 entries in the constant variable array.
C
C
C VOI is time in component environment (second).
C STATES(1) is HCO3_int in component concentrations (mM).
C STATES(2) is HCO3_ext in component concentrations (mM).
C STATES(3) is Cl_int in component concentrations (mM).
C STATES(4) is Cl_ext in component concentrations (mM).
C ALGBRC(13) is J_AE1_HCO3 in component AE1 (mM_per_s).
C ALGBRC(18) is J_AE1_Cl in component AE1 (mM_per_s).
C ALGBRC(14) is J_HCO3_influx in component AE1 (mM_per_s).
C ALGBRC(15) is J_Cl_influx in component AE1 (mM_per_s).
C CONSTS(1) is K_HCO3_ext in component AE1 (mM).
C CONSTS(2) is K_HCO3_int in component AE1 (mM).
C CONSTS(3) is K_Cl_ext in component AE1 (mM).
C CONSTS(4) is K_Cl_int in component AE1 (mM).
C CONSTS(5) is P_HCO3_ext in component AE1 (per_s).
C CONSTS(6) is P_HCO3_int in component AE1 (per_s).
C CONSTS(7) is P_Cl_ext in component AE1 (per_s).
C CONSTS(8) is P_Cl_int in component AE1 (per_s).
C ALGBRC(2) is beta_ext in component AE1 (dimensionless).
C ALGBRC(9) is beta_int in component AE1 (dimensionless).
C ALGBRC(10) is gamma_ext in component AE1 (dimensionless).
C ALGBRC(11) is gamma_int in component AE1 (dimensionless).
C ALGBRC(12) is sigma in component AE1 (per_s).
C CONSTS(9) is x_Tmax in component AE1 (mM).
C CONSTS(10) is K_I in component AE1 (mM).
C ALGBRC(1) is x_T in component AE1 (mM).
C ALGBRC(16) is x_ext in component AE1 (mM).
C ALGBRC(17) is x_int in component AE1 (mM).
C ALGBRC(3) is Jo_bm in component AE1 (mM_per_s).
C ALGBRC(4) is Ji_bm in component AE1 (mM_per_s).
C ALGBRC(5) is Js_bm in component AE1 (mM_per_s).
C ALGBRC(6) is Jo_cm in component AE1 (mM_per_s).
C ALGBRC(7) is Ji_cm in component AE1 (mM_per_s).
C ALGBRC(8) is Js_cm in component AE1 (mM_per_s).
C RATES(1) is d/dt HCO3_int in component concentrations (mM).
C RATES(2) is d/dt HCO3_ext in component concentrations (mM).
C RATES(3) is d/dt Cl_int in component concentrations (mM).
C RATES(4) is d/dt Cl_ext in component concentrations (mM).
C
      SUBROUTINE initConsts(CONSTS, RATES, STATES)
      REAL CONSTS(*), RATES(*), STATES(*)
      STATES(1) = 26.0
      STATES(2) = 26.0
      STATES(3) = 1.0
      STATES(4) = 114.0
      CONSTS(1) = 198
      CONSTS(2) = 198
      CONSTS(3) = 50
      CONSTS(4) = 50
      CONSTS(5) = 1247
      CONSTS(6) = 135
      CONSTS(7) = 562
      CONSTS(8) = 61
      CONSTS(9) = 1
      CONSTS(10) = 172
      CONSTS(10) = 0.00000
      CONSTS(11) = 0.00000
      CONSTS(12) = 1.00000
      CONSTS(13) = 0.00000
      RETURN
      END
      SUBROUTINE computeRates(VOI, CONSTS,  RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      RATES(1) = CONSTS(10)
      RATES(2) = CONSTS(11)
      RATES(3) = CONSTS(12)
      RATES(4) = CONSTS(13)
      RETURN
      END
      SUBROUTINE computeVariables(VOI, CONSTS, RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(1) = CONSTS(9)/(1.00000+STATES(1)/CONSTS(10))
      ALGBRC(2) = STATES(2)/CONSTS(1)
      ALGBRC(3) =  (1.00000/ALGBRC(1))*(1.00000/CONSTS(5)+1.00000/CONSTS(6)+CONSTS(2)/( CONSTS(6)*STATES(1))) ** - 1.00000
      ALGBRC(4) =  (1.00000/ALGBRC(1))*(1.00000/CONSTS(5)+1.00000/CONSTS(6)+CONSTS(1)/( CONSTS(5)*STATES(2))) ** - 1.00000
      ALGBRC(5) =  (1.00000/ALGBRC(1))*(1.00000/CONSTS(5)+1.00000/CONSTS(6)) ** - 1.00000
      ALGBRC(6) =  (1.00000/ALGBRC(1))*(1.00000/CONSTS(7)+1.00000/CONSTS(8)+CONSTS(4)/( CONSTS(8)*STATES(3))) ** - 1.00000
      ALGBRC(7) =  (1.00000/ALGBRC(1))*(1.00000/CONSTS(7)+1.00000/CONSTS(8)+CONSTS(3)/( CONSTS(7)*STATES(4))) ** - 1.00000
      ALGBRC(8) =  (1.00000/ALGBRC(1))*(1.00000/CONSTS(7)+1.00000/CONSTS(8)) ** - 1.00000
      ALGBRC(9) = STATES(1)/CONSTS(2)
      ALGBRC(10) = STATES(4)/CONSTS(3)
      ALGBRC(11) = STATES(3)/CONSTS(4)
      ALGBRC(12) =  (1.00000+ALGBRC(2)+ALGBRC(10))*( CONSTS(6)*ALGBRC(9)+ CONSTS(8)*ALGBRC(11))+ (1.00000+ALGBRC(9)+ALGBRC(11))*( CONSTS(5)*ALGBRC(2)+ CONSTS(7)*ALGBRC(10))
      ALGBRC(13) =  (ALGBRC(1)/ALGBRC(12))*( CONSTS(6)*ALGBRC(9)*CONSTS(7)*ALGBRC(10) -  CONSTS(5)*ALGBRC(2)*CONSTS(8)*ALGBRC(11))
      ALGBRC(14) =  (ALGBRC(1)/ALGBRC(12))*CONSTS(5)*ALGBRC(2)*( CONSTS(6)*ALGBRC(9)+ CONSTS(8)*ALGBRC(11))
      ALGBRC(15) =  (ALGBRC(1)/ALGBRC(12))*CONSTS(7)*ALGBRC(10)*( CONSTS(6)*ALGBRC(9)+ CONSTS(8)*ALGBRC(11))
      ALGBRC(16) = ( ALGBRC(1)*( CONSTS(6)*ALGBRC(9)+ CONSTS(8)*ALGBRC(11)))/ALGBRC(12)
      ALGBRC(17) = ( ALGBRC(1)*( CONSTS(5)*ALGBRC(2)+ CONSTS(7)*ALGBRC(10)))/ALGBRC(12)
      ALGBRC(18) = - ALGBRC(13)
      RETURN
      END