/*
   There are a total of 7 entries in the algebraic variable array.
   There are a total of 4 entries in each of the rate and state variable arrays.
   There are a total of 6 entries in the constant variable array.
 */
/*
 * VOI is t in component main (second).
 * CONSTANTS[0] is RT in component main (J_per_mol).
 * STATES[0] is q_1 in component main (mole).
 * STATES[1] is q_2 in component main (mole).
 * STATES[2] is q_3 in component main (mole).
 * STATES[3] is q_4 in component main (mole).
 * ALGEBRAIC[6] is v_r in component main (mol_per_s).
 * ALGEBRAIC[0] is u_1 in component main (J_per_mol).
 * ALGEBRAIC[1] is u_2 in component main (J_per_mol).
 * ALGEBRAIC[3] is u_3 in component main (J_per_mol).
 * ALGEBRAIC[4] is u_4 in component main (J_per_mol).
 * ALGEBRAIC[2] is u_f in component main (J_per_mol).
 * ALGEBRAIC[5] is u_r in component main (J_per_mol).
 * CONSTANTS[1] is K_q_1 in component main (per_mol).
 * CONSTANTS[2] is K_q_2 in component main (per_mol).
 * CONSTANTS[3] is K_q_3 in component main (per_mol).
 * CONSTANTS[4] is K_q_4 in component main (per_mol).
 * CONSTANTS[5] is kappa_r in component main (mol_per_s).
 * RATES[0] is d/dt q_1 in component main (mole).
 * RATES[1] is d/dt q_2 in component main (mole).
 * RATES[2] is d/dt q_3 in component main (mole).
 * RATES[3] is d/dt q_4 in component main (mole).
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
CONSTANTS[0] = 2578.73058;
STATES[0] = 1;
STATES[1] = 1;
STATES[2] = 0;
STATES[3] = 0;
CONSTANTS[1] = 2;
CONSTANTS[2] = 2;
CONSTANTS[3] = 2;
CONSTANTS[4] = 2;
CONSTANTS[5] = 0.1;
}
void
computeRates(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] =  CONSTANTS[0]*log( CONSTANTS[1]*STATES[0]);
ALGEBRAIC[1] =  CONSTANTS[0]*log( CONSTANTS[2]*STATES[1]);
ALGEBRAIC[2] = ALGEBRAIC[0]+ 2.00000*ALGEBRAIC[1];
ALGEBRAIC[3] =  CONSTANTS[0]*log( CONSTANTS[3]*STATES[2]);
ALGEBRAIC[4] =  CONSTANTS[0]*log( CONSTANTS[4]*STATES[3]);
ALGEBRAIC[5] = ALGEBRAIC[3]+ 2.00000*ALGEBRAIC[4];
ALGEBRAIC[6] =  CONSTANTS[5]*(exp(ALGEBRAIC[2]/CONSTANTS[0]) - exp(ALGEBRAIC[5]/CONSTANTS[0]));
RATES[0] = - ALGEBRAIC[6];
RATES[1] =  - 2.00000*ALGEBRAIC[6];
RATES[2] = ALGEBRAIC[6];
RATES[3] =  2.00000*ALGEBRAIC[6];
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] =  CONSTANTS[0]*log( CONSTANTS[1]*STATES[0]);
ALGEBRAIC[1] =  CONSTANTS[0]*log( CONSTANTS[2]*STATES[1]);
ALGEBRAIC[2] = ALGEBRAIC[0]+ 2.00000*ALGEBRAIC[1];
ALGEBRAIC[3] =  CONSTANTS[0]*log( CONSTANTS[3]*STATES[2]);
ALGEBRAIC[4] =  CONSTANTS[0]*log( CONSTANTS[4]*STATES[3]);
ALGEBRAIC[5] = ALGEBRAIC[3]+ 2.00000*ALGEBRAIC[4];
ALGEBRAIC[6] =  CONSTANTS[5]*(exp(ALGEBRAIC[2]/CONSTANTS[0]) - exp(ALGEBRAIC[5]/CONSTANTS[0]));
}