/*
   There are a total of 4 entries in the algebraic variable array.
   There are a total of 3 entries in each of the rate and state variable arrays.
   There are a total of 13 entries in the constant variable array.
 */
/*
 * VOI is time in component environment (minute).
 * STATES[0] is C in component C (micromolar).
 * STATES[1] is X in component X (dimensionless).
 * CONSTANTS[0] is kd in component model_parameters (first_order_rate_constant).
 * CONSTANTS[1] is Kd in component model_parameters (micromolar).
 * CONSTANTS[2] is vi in component model_parameters (flux).
 * CONSTANTS[3] is vd in component model_parameters (flux).
 * STATES[2] is M in component M (dimensionless).
 * ALGEBRAIC[0] is M_star in component M_star (dimensionless).
 * ALGEBRAIC[2] is V1 in component model_parameters (first_order_rate_constant).
 * CONSTANTS[4] is V2 in component model_parameters (first_order_rate_constant).
 * CONSTANTS[5] is K1 in component model_parameters (dimensionless).
 * CONSTANTS[6] is K2 in component model_parameters (dimensionless).
 * ALGEBRAIC[1] is X_star in component X_star (dimensionless).
 * ALGEBRAIC[3] is V3 in component model_parameters (first_order_rate_constant).
 * CONSTANTS[7] is V4 in component model_parameters (first_order_rate_constant).
 * CONSTANTS[8] is K3 in component model_parameters (dimensionless).
 * CONSTANTS[9] is K4 in component model_parameters (dimensionless).
 * CONSTANTS[10] is Kc in component model_parameters (micromolar).
 * CONSTANTS[11] is VM1 in component model_parameters (first_order_rate_constant).
 * CONSTANTS[12] is VM3 in component model_parameters (first_order_rate_constant).
 * RATES[0] is d/dt C in component C (micromolar).
 * RATES[2] is d/dt M in component M (dimensionless).
 * RATES[1] is d/dt X in component X (dimensionless).
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
STATES[0] = 0.01;
STATES[1] = 0.01;
CONSTANTS[0] = 0.01;
CONSTANTS[1] = 0.02;
CONSTANTS[2] = 0.025;
CONSTANTS[3] = 0.25;
STATES[2] = 0.01;
CONSTANTS[4] = 1.5;
CONSTANTS[5] = 0.005;
CONSTANTS[6] = 0.005;
CONSTANTS[7] = 0.5;
CONSTANTS[8] = 0.005;
CONSTANTS[9] = 0.005;
CONSTANTS[10] = 0.5;
CONSTANTS[11] = 3;
CONSTANTS[12] = 1;
}
void
computeRates(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
RATES[0] = (CONSTANTS[2] - ( CONSTANTS[3]*STATES[1]*STATES[0])/(CONSTANTS[1]+STATES[0])) -  CONSTANTS[0]*STATES[0];
ALGEBRAIC[0] = 1.00000 - STATES[2];
ALGEBRAIC[2] = ( CONSTANTS[11]*STATES[0])/(CONSTANTS[10]+STATES[0]);
RATES[2] = ( ALGEBRAIC[2]*ALGEBRAIC[0])/(CONSTANTS[5]+ALGEBRAIC[0]) - ( CONSTANTS[4]*STATES[2])/(CONSTANTS[6]+STATES[2]);
ALGEBRAIC[1] = 1.00000 - STATES[1];
ALGEBRAIC[3] =  STATES[2]*CONSTANTS[12];
RATES[1] = ( ALGEBRAIC[3]*ALGEBRAIC[1])/(CONSTANTS[8]+ALGEBRAIC[1]) - ( CONSTANTS[7]*STATES[1])/(CONSTANTS[9]+STATES[1]);
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] = 1.00000 - STATES[2];
ALGEBRAIC[2] = ( CONSTANTS[11]*STATES[0])/(CONSTANTS[10]+STATES[0]);
ALGEBRAIC[1] = 1.00000 - STATES[1];
ALGEBRAIC[3] =  STATES[2]*CONSTANTS[12];
}