C
C There are a total of 12 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 8 entries in the constant variable array.
C
C
C VOI is time in component time (ms).
C CONSTS(1) is IStim in component stimulus_protocol (uA_per_mmsq).
C CONSTS(2) is g_K_add in component parameters (mS_per_mmsq).
C STATES(1) is V in component membrane (mV).
C CONSTS(3) is Cm in component membrane (uF_per_mm2).
C ALGBRC(1) is i_Na in component sodium_channel (uA_per_mm2).
C ALGBRC(11) is i_K in component potassium_channel (uA_per_mm2).
C ALGBRC(12) is i_Leak in component leakage_current (uA_per_mm2).
C CONSTS(8) is IStimC in component membrane (uA_per_mm2).
C CONSTS(4) is g_Na_max in component sodium_channel (mS_per_mm2).
C ALGBRC(2) is g_Na in component sodium_channel (mS_per_mm2).
C CONSTS(5) is E_Na in component sodium_channel (mV).
C STATES(2) is m in component sodium_channel_m_gate (dimensionless).
C STATES(3) is h in component sodium_channel_h_gate (dimensionless).
C ALGBRC(3) is alpha_m in component sodium_channel_m_gate (per_ms).
C ALGBRC(7) is beta_m in component sodium_channel_m_gate (per_ms).
C ALGBRC(4) is alpha_h in component sodium_channel_h_gate (per_ms).
C ALGBRC(8) is beta_h in component sodium_channel_h_gate (per_ms).
C ALGBRC(6) is g_K1 in component potassium_channel (mS_per_mm2).
C ALGBRC(10) is g_K2 in component potassium_channel (mS_per_mm2).
C STATES(4) is n in component potassium_channel_n_gate (dimensionless).
C ALGBRC(5) is alpha_n in component potassium_channel_n_gate (per_ms).
C ALGBRC(9) is beta_n in component potassium_channel_n_gate (per_ms).
C CONSTS(6) is g_L in component leakage_current (mS_per_mm2).
C CONSTS(7) is E_L in component leakage_current (mV).
C RATES(1) is d/dt V in component membrane (mV).
C RATES(2) is d/dt m in component sodium_channel_m_gate (dimensionless).
C RATES(3) is d/dt h in component sodium_channel_h_gate (dimensionless).
C RATES(4) is d/dt n in component potassium_channel_n_gate (dimensionless).
C
      SUBROUTINE initConsts(CONSTS, RATES, STATES)
      REAL CONSTS(*), RATES(*), STATES(*)
      CONSTS(1) = 0.0
      CONSTS(2) = 0.0
      STATES(1) = -73.8
      CONSTS(3) = 0.12
      CONSTS(4) = 4.0
      CONSTS(5) = 40.0
      STATES(2) = 0.05
      STATES(3) = 0.785
      STATES(4) = 0.0935
      CONSTS(6) = 0.0
      CONSTS(7) = -60.0
      CONSTS(8) = CONSTS(1)
      RETURN
      END
      SUBROUTINE computeRates(VOI, CONSTS,  RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(3) = ( 0.100000*(- STATES(1) - 48.0000))/(EXP((- STATES(1) - 48.0000)/15.0000) - 1.00000)
      ALGBRC(7) = ( 0.120000*(STATES(1)+8.00000))/(EXP((STATES(1)+8.00000)/5.00000) - 1.00000)
      RATES(2) =  ALGBRC(3)*(1.00000 - STATES(2)) -  ALGBRC(7)*STATES(2)
      ALGBRC(4) =  0.170000*EXP((- STATES(1) - 90.0000)/20.0000)
      ALGBRC(8) = 1.00000/(1.00000+EXP((- STATES(1) - 42.0000)/10.0000))
      RATES(3) =  ALGBRC(4)*(1.00000 - STATES(3)) -  ALGBRC(8)*STATES(3)
      ALGBRC(5) = ( 0.000100000*(- STATES(1) - 50.0000))/(EXP((- STATES(1) - 50.0000)/10.0000) - 1.00000)
      ALGBRC(9) =  0.00200000*EXP((- STATES(1) - 90.0000)/80.0000)
      RATES(4) =  ALGBRC(5)*(1.00000 - STATES(4)) -  ALGBRC(9)*STATES(4)
      ALGBRC(1) =  ( CONSTS(4)*STATES(2) ** 3.00000*STATES(3)+0.00140000)*(STATES(1) - CONSTS(5))
      ALGBRC(6) =  0.0120000*EXP((- STATES(1) - 90.0000)/50.0000)+ 0.000150000*EXP((STATES(1)+90.0000)/60.0000)
      ALGBRC(10) =  0.0120000*STATES(4) ** 4.00000
      ALGBRC(11) =  (ALGBRC(6)+ALGBRC(10)+CONSTS(2))*(STATES(1)+100.000)
      ALGBRC(12) =  CONSTS(6)*(STATES(1) - CONSTS(7))
      RATES(1) = (CONSTS(1) - (ALGBRC(1)+ALGBRC(11)+ALGBRC(12)))/CONSTS(3)
      RETURN
      END
      SUBROUTINE computeVariables(VOI, CONSTS, RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(3) = ( 0.100000*(- STATES(1) - 48.0000))/(EXP((- STATES(1) - 48.0000)/15.0000) - 1.00000)
      ALGBRC(7) = ( 0.120000*(STATES(1)+8.00000))/(EXP((STATES(1)+8.00000)/5.00000) - 1.00000)
      ALGBRC(4) =  0.170000*EXP((- STATES(1) - 90.0000)/20.0000)
      ALGBRC(8) = 1.00000/(1.00000+EXP((- STATES(1) - 42.0000)/10.0000))
      ALGBRC(5) = ( 0.000100000*(- STATES(1) - 50.0000))/(EXP((- STATES(1) - 50.0000)/10.0000) - 1.00000)
      ALGBRC(9) =  0.00200000*EXP((- STATES(1) - 90.0000)/80.0000)
      ALGBRC(1) =  ( CONSTS(4)*STATES(2) ** 3.00000*STATES(3)+0.00140000)*(STATES(1) - CONSTS(5))
      ALGBRC(6) =  0.0120000*EXP((- STATES(1) - 90.0000)/50.0000)+ 0.000150000*EXP((STATES(1)+90.0000)/60.0000)
      ALGBRC(10) =  0.0120000*STATES(4) ** 4.00000
      ALGBRC(11) =  (ALGBRC(6)+ALGBRC(10)+CONSTS(2))*(STATES(1)+100.000)
      ALGBRC(12) =  CONSTS(6)*(STATES(1) - CONSTS(7))
      ALGBRC(2) =  STATES(2) ** 3.00000*STATES(3)*CONSTS(4)
      RETURN
      END