TSolveEquationParameters

The TSolveEquationParameters data structure holds the convergence parameters used by C_SolveEquation.

typedef struct {

int Size;

int MaxNumberOfIterations;

double Tolerance;

double MaxStep;

double Delta;

} TSolveEquationParameters;

Members

Size

Specifies the size, in bytes, of this data structure. Set this member to sizeof(TSolveEquationParameters) before calling a function with a TSolveEquationParameters parameter.

MaxNumberOfIterations

The maximum number of steps that the C_SolveEquation will use when trying to solve the given equation.

Tolerance

This controls the accuracy of the solution. C_SolveEquation searches for a value of $X$ which satisfies \begin{equation} | Y(X) - \textrm{TargetY} | < \textrm{Tolerance} \end{equation}

MaxStep

This limits the change in $X$ value from one iteration to the next in C_SolveEquation. When C_SolveEquation choose new values of $X$ it will not choose a value more than MaxStep away from the previous value of $X$.

Delta

This is a perturbation size, used to calculate the derivative of $Y$. Delta should always be less than the tolerance specified. If the latest estimate of the solution is $X$, then the derivative will be estimated as \begin{equation} \frac{Y(X+\delta X) - Y(X)}{\delta X} \end{equation} where $\delta X = \textrm{Delta} \times X$.