/*
   There are a total of 32 entries in the algebraic variable array.
   There are a total of 7 entries in each of the rate and state variable arrays.
   There are a total of 22 entries in the constant variable array.
 */
/*
 * VOI is t in component environment (second).
 * CONSTANTS[0] is C_m in component environment (fF).
 * STATES[0] is q_K_o in component environment (fmol).
 * STATES[1] is q_K_i in component environment (fmol).
 * STATES[2] is q_Sa in component environment (fmol).
 * STATES[3] is q_Sb in component environment (fmol).
 * STATES[4] is q_Sc in component environment (fmol).
 * STATES[5] is q_Sd in component environment (fmol).
 * STATES[6] is q_mem in component environment (fC).
 * ALGEBRAIC[0] is Vmem in component environment (volt).
 * CONSTANTS[1] is R in component environment (J_per_K_per_mol).
 * CONSTANTS[2] is T in component environment (kelvin).
 * CONSTANTS[3] is F in component environment (C_per_mol).
 * ALGEBRAIC[22] is v_Kr in component Kr (fmol_per_sec).
 * ALGEBRAIC[29] is I_mem_Kr in component Kr (fA).
 * ALGEBRAIC[2] is I_stim in component environment (fA).
 * CONSTANTS[4] is stimPeriod in component environment (second).
 * CONSTANTS[5] is stimDuration in component environment (second).
 * ALGEBRAIC[1] is tPeriod in component environment (second).
 * ALGEBRAIC[24] is i_Kr in component environment (uA_per_uF).
 * CONSTANTS[6] is kappa_Kr in component Kr_parameters (fmol_per_sec).
 * CONSTANTS[7] is kappa_xr10 in component Kr_parameters (fmol_per_sec).
 * CONSTANTS[8] is kappa_xr11 in component Kr_parameters (fmol_per_sec).
 * CONSTANTS[9] is kappa_xr20 in component Kr_parameters (fmol_per_sec).
 * CONSTANTS[10] is kappa_xr21 in component Kr_parameters (fmol_per_sec).
 * CONSTANTS[11] is K_K_i in component Kr_parameters (per_fmol).
 * CONSTANTS[12] is K_K_o in component Kr_parameters (per_fmol).
 * CONSTANTS[13] is K_Sa_Kr in component Kr_parameters (per_fmol).
 * CONSTANTS[14] is K_Sb_Kr in component Kr_parameters (per_fmol).
 * CONSTANTS[15] is K_Sc_Kr in component Kr_parameters (per_fmol).
 * CONSTANTS[16] is K_Sd_Kr in component Kr_parameters (per_fmol).
 * CONSTANTS[17] is zK in component Kr_parameters (dimensionless).
 * CONSTANTS[18] is z_xr1_f in component Kr_parameters (dimensionless).
 * CONSTANTS[19] is z_xr1_r in component Kr_parameters (dimensionless).
 * CONSTANTS[20] is z_xr2_f in component Kr_parameters (dimensionless).
 * CONSTANTS[21] is z_xr2_r in component Kr_parameters (dimensionless).
 * ALGEBRAIC[3] is u_K_i in component Kr (J_per_mol).
 * ALGEBRAIC[4] is u_K_o in component Kr (J_per_mol).
 * ALGEBRAIC[5] is V_mem in component Kr (J_per_C).
 * ALGEBRAIC[6] is Am_Kr in component Kr (J_per_mol).
 * ALGEBRAIC[20] is Af_Kr in component Kr (J_per_mol).
 * ALGEBRAIC[21] is Ar_Kr in component Kr (J_per_mol).
 * ALGEBRAIC[18] is v_Sa in component Kr (fmol_per_sec).
 * ALGEBRAIC[30] is v_Sb in component Kr (fmol_per_sec).
 * ALGEBRAIC[28] is v_Sc in component Kr (fmol_per_sec).
 * ALGEBRAIC[31] is v_Sd in component Kr (fmol_per_sec).
 * ALGEBRAIC[13] is v_x10 in component Kr (fmol_per_sec).
 * ALGEBRAIC[26] is v_x11 in component Kr (fmol_per_sec).
 * ALGEBRAIC[17] is v_x20 in component Kr (fmol_per_sec).
 * ALGEBRAIC[27] is v_x21 in component Kr (fmol_per_sec).
 * ALGEBRAIC[7] is mu_Sa in component Kr (J_per_mol).
 * ALGEBRAIC[10] is mu_Sb in component Kr (J_per_mol).
 * ALGEBRAIC[14] is mu_Sc in component Kr (J_per_mol).
 * ALGEBRAIC[19] is mu_Sd in component Kr (J_per_mol).
 * ALGEBRAIC[8] is Af_x10 in component Kr (J_per_mol).
 * ALGEBRAIC[11] is Ar_x10 in component Kr (J_per_mol).
 * ALGEBRAIC[15] is Af_x11 in component Kr (J_per_mol).
 * ALGEBRAIC[23] is Ar_x11 in component Kr (J_per_mol).
 * ALGEBRAIC[9] is Af_x20 in component Kr (J_per_mol).
 * ALGEBRAIC[16] is Ar_x20 in component Kr (J_per_mol).
 * ALGEBRAIC[12] is Af_x21 in component Kr (J_per_mol).
 * ALGEBRAIC[25] is Ar_x21 in component Kr (J_per_mol).
 * RATES[1] is d/dt q_K_i in component environment (fmol).
 * RATES[0] is d/dt q_K_o in component environment (fmol).
 * RATES[6] is d/dt q_mem in component environment (fC).
 * RATES[2] is d/dt q_Sa in component environment (fmol).
 * RATES[3] is d/dt q_Sb in component environment (fmol).
 * RATES[4] is d/dt q_Sc in component environment (fmol).
 * RATES[5] is d/dt q_Sd in component environment (fmol).
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
CONSTANTS[0] = 153400;
STATES[0] = 27.9828;
STATES[1] = 5510;
STATES[2] = 1.598306E-07;
STATES[3] = 1.598306E-07;
STATES[4] = 1.598306E-07;
STATES[5] = 1.598306E-07;
STATES[6] = -13039;
CONSTANTS[1] = 8.31;
CONSTANTS[2] = 310;
CONSTANTS[3] = 96500;
CONSTANTS[4] = 1;
CONSTANTS[5] = 0.0001;
CONSTANTS[6] = 271.854;
CONSTANTS[7] = 2.51352;
CONSTANTS[8] = 0.0672974;
CONSTANTS[9] = 8.45146;
CONSTANTS[10] = 68.9799;
CONSTANTS[11] = 1.94622;
CONSTANTS[12] = 12.9197;
CONSTANTS[13] = 1.47312;
CONSTANTS[14] = 0.180487;
CONSTANTS[15] = 55.02;
CONSTANTS[16] = 6.74109;
CONSTANTS[17] = 1;
CONSTANTS[18] = 1.6149028778859738;
CONSTANTS[19] = -1.3218634652232777;
CONSTANTS[20] = -1.0273976425216251;
CONSTANTS[21] = -0.18153135376657775;
}
void
computeRates(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[5] = STATES[6]/CONSTANTS[0];
ALGEBRAIC[7] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[13]*STATES[2]);
ALGEBRAIC[8] = ALGEBRAIC[7]+ CONSTANTS[18]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[10] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[14]*STATES[3]);
ALGEBRAIC[11] = ALGEBRAIC[10]+ CONSTANTS[19]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[13] =  CONSTANTS[7]*(exp(ALGEBRAIC[8]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[11]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[9] = ALGEBRAIC[7]+ CONSTANTS[20]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[14] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[15]*STATES[4]);
ALGEBRAIC[16] = ALGEBRAIC[14]+ CONSTANTS[21]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[17] =  CONSTANTS[9]*(exp(ALGEBRAIC[9]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[16]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[18] = - ALGEBRAIC[13] - ALGEBRAIC[17];
RATES[2] = ALGEBRAIC[18];
ALGEBRAIC[6] =  CONSTANTS[17]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[3] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[11]*STATES[1]);
ALGEBRAIC[19] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[16]*STATES[5]);
ALGEBRAIC[20] = ALGEBRAIC[19]+ALGEBRAIC[3]+ALGEBRAIC[6];
ALGEBRAIC[4] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[12]*STATES[0]);
ALGEBRAIC[21] = ALGEBRAIC[19]+ALGEBRAIC[4];
ALGEBRAIC[22] = (ALGEBRAIC[6]==0.00000 ?  1.00000*CONSTANTS[6]*(exp(ALGEBRAIC[20]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[21]/( CONSTANTS[1]*CONSTANTS[2]))) :  ((( 1.00000*CONSTANTS[6]*ALGEBRAIC[6])/( CONSTANTS[1]*CONSTANTS[2]))/(exp(ALGEBRAIC[6]/( CONSTANTS[1]*CONSTANTS[2])) - 1.00000))*(exp(ALGEBRAIC[20]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[21]/( CONSTANTS[1]*CONSTANTS[2]))));
RATES[1] = - ALGEBRAIC[22];
RATES[0] = ALGEBRAIC[22];
ALGEBRAIC[15] = ALGEBRAIC[14]+ CONSTANTS[18]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[23] = ALGEBRAIC[19]+ CONSTANTS[19]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[26] =  CONSTANTS[8]*(exp(ALGEBRAIC[15]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[23]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[28] = ALGEBRAIC[17] - ALGEBRAIC[26];
RATES[4] = ALGEBRAIC[28];
ALGEBRAIC[12] = ALGEBRAIC[10]+ CONSTANTS[20]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[25] = ALGEBRAIC[19]+ CONSTANTS[21]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[27] =  CONSTANTS[10]*(exp(ALGEBRAIC[12]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[25]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[29] =  CONSTANTS[3]*( - CONSTANTS[17]*ALGEBRAIC[22]+ ALGEBRAIC[13]*(CONSTANTS[19] - CONSTANTS[18])+ ALGEBRAIC[26]*(CONSTANTS[19] - CONSTANTS[19])+ ALGEBRAIC[17]*(CONSTANTS[21] - CONSTANTS[20])+ ALGEBRAIC[27]*(CONSTANTS[21] - CONSTANTS[20]));
ALGEBRAIC[1] = VOI -  floor(VOI/CONSTANTS[4])*CONSTANTS[4];
ALGEBRAIC[2] = (ALGEBRAIC[1]>=0.300000&&ALGEBRAIC[1]<=0.300000+CONSTANTS[5] ? ( 0.00000*0.0750000*CONSTANTS[0])/CONSTANTS[5] : 0.00000);
RATES[6] = ALGEBRAIC[29]+ALGEBRAIC[2];
ALGEBRAIC[30] = ALGEBRAIC[13] - ALGEBRAIC[27];
RATES[3] = ALGEBRAIC[30];
ALGEBRAIC[31] = ALGEBRAIC[26]+ALGEBRAIC[27];
RATES[5] = ALGEBRAIC[31];
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[5] = STATES[6]/CONSTANTS[0];
ALGEBRAIC[7] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[13]*STATES[2]);
ALGEBRAIC[8] = ALGEBRAIC[7]+ CONSTANTS[18]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[10] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[14]*STATES[3]);
ALGEBRAIC[11] = ALGEBRAIC[10]+ CONSTANTS[19]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[13] =  CONSTANTS[7]*(exp(ALGEBRAIC[8]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[11]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[9] = ALGEBRAIC[7]+ CONSTANTS[20]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[14] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[15]*STATES[4]);
ALGEBRAIC[16] = ALGEBRAIC[14]+ CONSTANTS[21]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[17] =  CONSTANTS[9]*(exp(ALGEBRAIC[9]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[16]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[18] = - ALGEBRAIC[13] - ALGEBRAIC[17];
ALGEBRAIC[6] =  CONSTANTS[17]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[3] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[11]*STATES[1]);
ALGEBRAIC[19] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[16]*STATES[5]);
ALGEBRAIC[20] = ALGEBRAIC[19]+ALGEBRAIC[3]+ALGEBRAIC[6];
ALGEBRAIC[4] =  CONSTANTS[1]*CONSTANTS[2]*log( CONSTANTS[12]*STATES[0]);
ALGEBRAIC[21] = ALGEBRAIC[19]+ALGEBRAIC[4];
ALGEBRAIC[22] = (ALGEBRAIC[6]==0.00000 ?  1.00000*CONSTANTS[6]*(exp(ALGEBRAIC[20]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[21]/( CONSTANTS[1]*CONSTANTS[2]))) :  ((( 1.00000*CONSTANTS[6]*ALGEBRAIC[6])/( CONSTANTS[1]*CONSTANTS[2]))/(exp(ALGEBRAIC[6]/( CONSTANTS[1]*CONSTANTS[2])) - 1.00000))*(exp(ALGEBRAIC[20]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[21]/( CONSTANTS[1]*CONSTANTS[2]))));
ALGEBRAIC[15] = ALGEBRAIC[14]+ CONSTANTS[18]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[23] = ALGEBRAIC[19]+ CONSTANTS[19]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[26] =  CONSTANTS[8]*(exp(ALGEBRAIC[15]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[23]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[28] = ALGEBRAIC[17] - ALGEBRAIC[26];
ALGEBRAIC[12] = ALGEBRAIC[10]+ CONSTANTS[20]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[25] = ALGEBRAIC[19]+ CONSTANTS[21]*CONSTANTS[3]*ALGEBRAIC[5];
ALGEBRAIC[27] =  CONSTANTS[10]*(exp(ALGEBRAIC[12]/( CONSTANTS[1]*CONSTANTS[2])) - exp(ALGEBRAIC[25]/( CONSTANTS[1]*CONSTANTS[2])));
ALGEBRAIC[29] =  CONSTANTS[3]*( - CONSTANTS[17]*ALGEBRAIC[22]+ ALGEBRAIC[13]*(CONSTANTS[19] - CONSTANTS[18])+ ALGEBRAIC[26]*(CONSTANTS[19] - CONSTANTS[19])+ ALGEBRAIC[17]*(CONSTANTS[21] - CONSTANTS[20])+ ALGEBRAIC[27]*(CONSTANTS[21] - CONSTANTS[20]));
ALGEBRAIC[1] = VOI -  floor(VOI/CONSTANTS[4])*CONSTANTS[4];
ALGEBRAIC[2] = (ALGEBRAIC[1]>=0.300000&&ALGEBRAIC[1]<=0.300000+CONSTANTS[5] ? ( 0.00000*0.0750000*CONSTANTS[0])/CONSTANTS[5] : 0.00000);
ALGEBRAIC[30] = ALGEBRAIC[13] - ALGEBRAIC[27];
ALGEBRAIC[31] = ALGEBRAIC[26]+ALGEBRAIC[27];
rootfind_0(VOI, CONSTANTS, RATES, STATES, ALGEBRAIC, pret);
ALGEBRAIC[24] =  (( 1.00000e-09*CONSTANTS[3])/CONSTANTS[0])*ALGEBRAIC[22];
}

void objfunc_0(double *p, double *hx, int m, int n, void *adata)
{
  struct rootfind_info* rfi = (struct rootfind_info*)adata;
#define VOI rfi->aVOI
#define CONSTANTS rfi->aCONSTANTS
#define RATES rfi->aRATES
#define STATES rfi->aSTATES
#define ALGEBRAIC rfi->aALGEBRAIC
#define pret rfi->aPRET
  ALGEBRAIC[0] = *p;
  *hx = (STATES[6]) - ( ALGEBRAIC[0]*CONSTANTS[0]);
#undef VOI
#undef CONSTANTS
#undef RATES
#undef STATES
#undef ALGEBRAIC
#undef pret
}
void rootfind_0(double VOI, double* CONSTANTS, double* RATES, 
double* STATES, double* ALGEBRAIC, int* pret)
{
  static double val = 0.1;
  double bp, work[LM_DIF_WORKSZ(1, 1)];
  struct rootfind_info rfi;
  rfi.aVOI = VOI;
  rfi.aCONSTANTS = CONSTANTS;
  rfi.aRATES = RATES;
  rfi.aSTATES = STATES;
  rfi.aALGEBRAIC = ALGEBRAIC;
  rfi.aPRET = pret;
  do_levmar(objfunc_0, &val, &bp, work, pret, 1, &rfi);
  ALGEBRAIC[0] = val;
}