/*
   There are a total of 4 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 10 entries in the constant variable array.
 */
/*
 * VOI is time in component environment (second).
 * ALGEBRAIC[1] is F in component equations (force).
 * STATES[0] is R_on in component equations (dimensionless).
 * STATES[1] is A in component equations (dimensionless).
 * CONSTANTS[0] is alpha in component equations (dimensionless).
 * ALGEBRAIC[0] is D in component equations (dimensionless).
 * ALGEBRAIC[2] is k_XB in component equations (per_second).
 * CONSTANTS[1] is k_a in component equations (per_second).
 * STATES[2] is x in component equations (um).
 * CONSTANTS[2] is x_0 in component undefined_parameters (um).
 * CONSTANTS[3] is epsilon in component undefined_parameters (force_per_um).
 * CONSTANTS[4] is beta in component undefined_parameters (per_um).
 * CONSTANTS[5] is g in component undefined_parameters (per_second).
 * CONSTANTS[6] is f in component undefined_parameters (per_second).
 * CONSTANTS[7] is k_off in component undefined_parameters (per_second).
 * CONSTANTS[8] is k_on in component undefined_parameters (per_second).
 * STATES[3] is L in component parameters_stelzer_et_al (um).
 * CONSTANTS[9] is L_0 in component parameters_stelzer_et_al (um).
 * ALGEBRAIC[3] is dL_dt in component parameters_stelzer_et_al (um_per_second).
 * RATES[0] is d/dt R_on in component equations (dimensionless).
 * RATES[1] is d/dt A in component equations (dimensionless).
 * RATES[2] is d/dt x in component equations (um).
 * RATES[3] is d/dt L in component parameters_stelzer_et_al (um).
 * There are a total of 2 condition variables.
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
STATES[0] = 1;
STATES[1] = 0;
CONSTANTS[0] = 0.1;
CONSTANTS[1] = 0;
STATES[2] = 1;
CONSTANTS[2] = 1;
CONSTANTS[3] = 1;
CONSTANTS[4] = 2;
CONSTANTS[5] = 1;
CONSTANTS[6] = 1;
CONSTANTS[7] = 1;
CONSTANTS[8] = 1;
STATES[3] = 2.12;
CONSTANTS[9] = 2.12;
RATES[0] = 0.1001;
RATES[1] = 0.1001;
RATES[2] = 0.1001;
RATES[3] = 0.1001;
}
void
computeResiduals(double VOI, double* CONSTANTS, double* RATES, double* OLDRATES, double* STATES,
                 double* OLDSTATES, double* ALGEBRAIC, double* CONDVARS)
{
resid[0] = RATES[0] -  - ((CONSTANTS[7]+ALGEBRAIC[2]+ CONSTANTS[0]*CONSTANTS[8])/(1.00000+CONSTANTS[0])+ CONSTANTS[6]*ALGEBRAIC[0])*STATES[0]+ (CONSTANTS[5] - (ALGEBRAIC[2]+ CONSTANTS[0]*CONSTANTS[8])/(1.00000+CONSTANTS[0]))*STATES[1]+ (ALGEBRAIC[2]+( CONSTANTS[0]*CONSTANTS[8])/(1.00000+CONSTANTS[0]))*CONSTANTS[4]*(STATES[3] - CONSTANTS[9]);
resid[1] = RATES[1] -  CONSTANTS[6]*ALGEBRAIC[0]*STATES[0] -  CONSTANTS[5]*STATES[1];
resid[2] = RATES[2] -  - CONSTANTS[5]*(STATES[2] - CONSTANTS[2])+ALGEBRAIC[3];
resid[3] = RATES[3] - ALGEBRAIC[3];
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[1] =  STATES[1]*CONSTANTS[3]*STATES[2];
}
void
computeEssentialVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] = 1.00000 - STATES[1];
ALGEBRAIC[2] =  CONSTANTS[1]*STATES[1];
ALGEBRAIC[3] = (CONDVAR[0]<0.00000&&CONDVAR[1]<=0.00000 ? 10.6000 : 0.00000);
}
void
getStateInformation(double* SI)
{
SI[0] = 1.0;
SI[1] = 1.0;
SI[2] = 1.0;
SI[3] = 1.0;
}
void
computeRoots(double VOI, double* CONSTANTS, double* RATES, double* OLDRATES, double* STATES,
             double* OLDSTATES, double* ALGEBRAIC, double* CONDVARS)
{
CONDVAR[0] = 0.00100000 - VOI;
CONDVAR[1] = VOI - 0.00300000;
}