.

The inspiration to write this code was to have an

easy-to-use parser for functions given as string. You have a string like

“cos(x)-7*x/(1+x)”

and you want to compute some values, maybe for displaying

the graph of the function. You can write code like this:

CFunction<long double>* fkt =

CFunction<long double>::Parse(“cos(x)-7*x/(1+x)”);long double y = fkt->Execute(1.5);

There are lots of definitions in the background, but the

result is easy and fast! There is a one-time pasing step to construct the

function tree, and function evaluations are only calls of standard math

functions like sin, +, *, sqrt. When you want to know details about the

implementaion, you should look into the source code. It would be too complex to

describe the parsing algorithm here.

### Downloads

Download demo source – 50 Kb

Download demo application – 32 Kb