/*
   There are a total of 4 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 16 entries in the constant variable array.
 */
/*
 * VOI is time in component environment (second).
 * STATES[0] is P in component P (picomolar).
 * CONSTANTS[0] is k1 in component model_parameters (second_order_rate_constant).
 * CONSTANTS[1] is k1_ in component model_parameters (first_order_rate_constant).
 * CONSTANTS[2] is k2 in component model_parameters (second_order_rate_constant).
 * CONSTANTS[3] is k2_ in component model_parameters (first_order_rate_constant).
 * CONSTANTS[4] is kcl in component model_parameters (first_order_rate_constant).
 * ALGEBRAIC[3] is D in component model_parameters (flux).
 * STATES[1] is Ca in component Ca (picomolar).
 * STATES[2] is Ci in component Ci (picomolar).
 * STATES[3] is Ra in component Ra (picomolar).
 * STATES[4] is Ri in component Ri (picomolar).
 * CONSTANTS[5] is k3 in component model_parameters (first_order_rate_constant).
 * CONSTANTS[6] is k3_ in component model_parameters (first_order_rate_constant).
 * CONSTANTS[7] is k4 in component model_parameters (first_order_rate_constant).
 * CONSTANTS[8] is k4_ in component model_parameters (first_order_rate_constant).
 * ALGEBRAIC[1] is rho in component rho (dimensionless).
 * CONSTANTS[9] is De in component model_parameters (flux).
 * ALGEBRAIC[2] is Dd in component model_parameters (flux).
 * CONSTANTS[10] is dmax in component model_parameters (flux).
 * CONSTANTS[11] is dmin in component model_parameters (flux).
 * CONSTANTS[12] is tau_on in component model_parameters (hour).
 * CONSTANTS[13] is tau_off in component model_parameters (hour).
 * CONSTANTS[15] is cycle_length in component model_parameters (hour).
 * CONSTANTS[14] is j in component model_parameters (dimensionless).
 * ALGEBRAIC[0] is time_hour in component model_parameters (hour).
 * RATES[0] is d/dt P in component P (picomolar).
 * RATES[3] is d/dt Ra in component Ra (picomolar).
 * RATES[4] is d/dt Ri in component Ri (picomolar).
 * RATES[1] is d/dt Ca in component Ca (picomolar).
 * RATES[2] is d/dt Ci in component Ci (picomolar).
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
STATES[0] = 3;
CONSTANTS[0] = 1e-6;
CONSTANTS[1] = 1e-3;
CONSTANTS[2] = 1e-7;
CONSTANTS[3] = 1e-3;
CONSTANTS[4] = 5e-3;
STATES[1] = 4e-4;
STATES[2] = 0.05;
STATES[3] = 16.9;
STATES[4] = 1.7;
CONSTANTS[5] = 1e-3;
CONSTANTS[6] = 1e-4;
CONSTANTS[7] = 2e-3;
CONSTANTS[8] = 0.4;
CONSTANTS[9] = 0;
CONSTANTS[10] = 7.5;
CONSTANTS[11] = 0;
CONSTANTS[12] = 0.5;
CONSTANTS[13] = 0.5;
CONSTANTS[14] = 9;
CONSTANTS[15] = CONSTANTS[12]+CONSTANTS[13];
}
void
computeRates(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
RATES[3] = ( CONSTANTS[1]*STATES[1]+ CONSTANTS[5]*STATES[4]) - ( CONSTANTS[0]*STATES[3]*STATES[0]+ CONSTANTS[6]*STATES[3]);
RATES[4] = ( CONSTANTS[3]*STATES[2]+ CONSTANTS[6]*STATES[3]) - ( CONSTANTS[2]*STATES[4]*STATES[0]+ CONSTANTS[5]*STATES[4]);
RATES[1] = ( CONSTANTS[0]*STATES[3]*STATES[0]+ CONSTANTS[7]*STATES[2]) - ( CONSTANTS[1]*STATES[1]+ CONSTANTS[8]*STATES[1]);
RATES[2] = ( CONSTANTS[2]*STATES[4]*STATES[0]+ CONSTANTS[8]*STATES[1]) - ( CONSTANTS[3]*STATES[2]+ CONSTANTS[7]*STATES[2]);
ALGEBRAIC[0] = ( VOI*1.00000)/3600.00;
ALGEBRAIC[2] = (ALGEBRAIC[0]/CONSTANTS[15]>=CONSTANTS[14] ? CONSTANTS[11] : ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]>=0.00000&&ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]<CONSTANTS[12] ? CONSTANTS[10] : ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]>=CONSTANTS[12]&&ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]<CONSTANTS[15] ? CONSTANTS[11] : 0.0/0.0);
ALGEBRAIC[3] = CONSTANTS[9]+ALGEBRAIC[2];
RATES[0] = ( CONSTANTS[1]*STATES[1]+ CONSTANTS[3]*STATES[2]+ALGEBRAIC[3]) - ( CONSTANTS[0]*STATES[3]*STATES[0]+ CONSTANTS[2]*STATES[4]*STATES[0]+ CONSTANTS[4]*STATES[0]);
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] = ( VOI*1.00000)/3600.00;
ALGEBRAIC[2] = (ALGEBRAIC[0]/CONSTANTS[15]>=CONSTANTS[14] ? CONSTANTS[11] : ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]>=0.00000&&ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]<CONSTANTS[12] ? CONSTANTS[10] : ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]>=CONSTANTS[12]&&ALGEBRAIC[0] -  floor(ALGEBRAIC[0]/CONSTANTS[15])*CONSTANTS[15]<CONSTANTS[15] ? CONSTANTS[11] : 0.0/0.0);
ALGEBRAIC[3] = CONSTANTS[9]+ALGEBRAIC[2];
ALGEBRAIC[1] = (STATES[3]+STATES[1])/(STATES[3]+STATES[1]+STATES[4]+STATES[2]);
}