/*
   There are a total of 10 entries in the algebraic variable array.
   There are a total of 5 entries in each of the rate and state variable arrays.
   There are a total of 13 entries in the constant variable array.
 */
/*
 * VOI is t in component environment (second).
 * CONSTANTS[0] is C_m in component environment (fF).
 * CONSTANTS[1] is w_i in component environment (pL).
 * CONSTANTS[2] is w_o in component environment (pL).
 * STATES[0] is q_mem in component environment (fC).
 * CONSTANTS[3] is R in component environment (J_per_K_per_mol).
 * CONSTANTS[4] is T in component environment (kelvin).
 * CONSTANTS[5] is F in component environment (C_per_mol).
 * ALGEBRAIC[7] is v_pCa_R1 in component pCa (fmol_per_sec).
 * ALGEBRAIC[8] is v_pCa_R2 in component pCa (fmol_per_sec).
 * STATES[1] is q_Ca_o in component environment (fmol).
 * STATES[2] is q_Ca_i in component environment (fmol).
 * STATES[3] is q_pCa in component environment (fmol).
 * STATES[4] is q_pCa_Ca in component environment (fmol).
 * ALGEBRAIC[1] is V_mem in component environment (J_per_C).
 * ALGEBRAIC[9] is I_mem_pCa in component pCa (fA).
 * ALGEBRAIC[2] is Ca_T in component environment (fmol).
 * ALGEBRAIC[3] is channel_T in component environment (fmol).
 * CONSTANTS[6] is kappa_pCa_R1 in component pCa_parameters (fmol_per_sec).
 * CONSTANTS[7] is kappa_pCa_R2 in component pCa_parameters (fmol_per_sec).
 * CONSTANTS[8] is K_Ca_i in component pCa_parameters (per_fmol).
 * CONSTANTS[9] is K_Ca_o in component pCa_parameters (per_fmol).
 * CONSTANTS[10] is K_pCa in component pCa_parameters (per_fmol).
 * CONSTANTS[11] is K_pCa_Ca in component pCa_parameters (per_fmol).
 * CONSTANTS[12] is zCa in component pCa_parameters (dimensionless).
 * ALGEBRAIC[0] is mu_Ca_i in component pCa (J_per_mol).
 * ALGEBRAIC[4] is mu_Ca_o in component pCa (J_per_mol).
 * ALGEBRAIC[5] is mu_pCa in component pCa (J_per_mol).
 * ALGEBRAIC[6] is mu_pCa_Ca in component pCa (J_per_mol).
 * RATES[2] is d/dt q_Ca_i in component environment (fmol).
 * RATES[1] is d/dt q_Ca_o in component environment (fmol).
 * RATES[3] is d/dt q_pCa in component environment (fmol).
 * RATES[4] is d/dt q_pCa_Ca in component environment (fmol).
 * RATES[0] is d/dt q_mem in component environment (fC).
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
CONSTANTS[0] = 153400;
CONSTANTS[1] = 25.8;
CONSTANTS[2] = 3.52;
STATES[0] = -8.5e4;
CONSTANTS[3] = 8.31;
CONSTANTS[4] = 310;
CONSTANTS[5] = 96500;
STATES[1] = 9.3276;
STATES[2] = 0.00456;
STATES[3] = 0.0032;
STATES[4] = 1e-9;
CONSTANTS[6] = 1451.43;
CONSTANTS[7] = 0.00014695;
CONSTANTS[8] = 32.3484;
CONSTANTS[9] = 0.00010737;
CONSTANTS[10] = 0.0179984;
CONSTANTS[11] = 0.0100142;
CONSTANTS[12] = 2;
}
void
computeRates(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[8]*STATES[2]);
ALGEBRAIC[5] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[10]*STATES[3]);
ALGEBRAIC[6] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[11]*STATES[4]);
ALGEBRAIC[7] =  CONSTANTS[6]*(exp((ALGEBRAIC[0]+ALGEBRAIC[5])/( CONSTANTS[3]*CONSTANTS[4])) - exp(ALGEBRAIC[6]/( CONSTANTS[3]*CONSTANTS[4])));
RATES[2] = - ALGEBRAIC[7];
ALGEBRAIC[4] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[9]*STATES[1]);
ALGEBRAIC[8] =  CONSTANTS[7]*(exp(ALGEBRAIC[6]/( CONSTANTS[3]*CONSTANTS[4])) - exp((ALGEBRAIC[4]+ALGEBRAIC[5])/( CONSTANTS[3]*CONSTANTS[4])));
RATES[1] = ALGEBRAIC[8];
RATES[3] = - ALGEBRAIC[7]+ALGEBRAIC[8];
RATES[4] = ALGEBRAIC[7] - ALGEBRAIC[8];
ALGEBRAIC[9] =  - CONSTANTS[12]*CONSTANTS[5]*ALGEBRAIC[8];
RATES[0] = ALGEBRAIC[9];
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[8]*STATES[2]);
ALGEBRAIC[5] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[10]*STATES[3]);
ALGEBRAIC[6] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[11]*STATES[4]);
ALGEBRAIC[7] =  CONSTANTS[6]*(exp((ALGEBRAIC[0]+ALGEBRAIC[5])/( CONSTANTS[3]*CONSTANTS[4])) - exp(ALGEBRAIC[6]/( CONSTANTS[3]*CONSTANTS[4])));
ALGEBRAIC[4] =  CONSTANTS[3]*CONSTANTS[4]*log( CONSTANTS[9]*STATES[1]);
ALGEBRAIC[8] =  CONSTANTS[7]*(exp(ALGEBRAIC[6]/( CONSTANTS[3]*CONSTANTS[4])) - exp((ALGEBRAIC[4]+ALGEBRAIC[5])/( CONSTANTS[3]*CONSTANTS[4])));
ALGEBRAIC[9] =  - CONSTANTS[12]*CONSTANTS[5]*ALGEBRAIC[8];
ALGEBRAIC[1] = STATES[0]/CONSTANTS[0];
ALGEBRAIC[2] = STATES[2]+STATES[1]+STATES[4];
ALGEBRAIC[3] = STATES[3]+STATES[4];
}