/*
   There are a total of 2 entries in the algebraic variable array.
   There are a total of 2 entries in each of the rate and state variable arrays.
   There are a total of 8 entries in the constant variable array.
 */
/*
 * CONSTANTS[6] is k2 in component moussa (per_sec).
 * CONSTANTS[7] is k1 in component moussa (per_sec).
 * STATES[0] is X1 in component moussa (conc).
 * STATES[1] is X2 in component moussa (conc).
 * VOI is time in component moussa (second).
 * ALGEBRAIC[0] is A in component moussa (conc).
 * ALGEBRAIC[1] is D in component moussa (conc).
 * CONSTANTS[0] is R in component moussa (gas_constant).
 * CONSTANTS[1] is E1 in component moussa (J_per_mole).
 * CONSTANTS[2] is E2 in component moussa (J_per_mole).
 * CONSTANTS[3] is A1 in component moussa (per_sec).
 * CONSTANTS[4] is A2 in component moussa (per_sec).
 * CONSTANTS[5] is T in component moussa (kelvin).
 * RATES[0] is d/dt X1 in component moussa (conc).
 * RATES[1] is d/dt X2 in component moussa (conc).
 * There are a total of 0 condition variables.
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
STATES[0] = 1;
STATES[1] = 0;
CONSTANTS[0] = 8.3;
CONSTANTS[1] = 2.5E5;
CONSTANTS[2] = 1.28E5;
CONSTANTS[3] = 0.0683E38;
CONSTANTS[4] = 0.0283E19;
CONSTANTS[5] = 325;
CONSTANTS[6] =  CONSTANTS[4]*exp(- CONSTANTS[2]/( CONSTANTS[0]*CONSTANTS[5]));
CONSTANTS[7] =  CONSTANTS[3]*exp(- CONSTANTS[1]/( CONSTANTS[0]*CONSTANTS[5]));
RATES[0] = 0.1001;
RATES[1] = 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]*STATES[0];
resid[1] = RATES[1] -  CONSTANTS[7]*STATES[0] -  CONSTANTS[6]*STATES[1];
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
ALGEBRAIC[0] = STATES[0]+STATES[1];
ALGEBRAIC[1] = 1.00000 - ALGEBRAIC[0];
}
void
computeEssentialVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
}
void
getStateInformation(double* SI)
{
SI[0] = 1.0;
SI[1] = 1.0;
}
void
computeRoots(double VOI, double* CONSTANTS, double* RATES, double* OLDRATES, double* STATES,
             double* OLDSTATES, double* ALGEBRAIC, double* CONDVARS)
{
}