CODEWITHSUNDEEP
objective-cobjective-c-blocks
bcattle
bcattle

Reputation: 12819

Can a global function take a block argument?

I'm writing a function that implements the Secant Method for a math utility library.

I'd really like to call the function with a syntax like:

double rootSecantMethod((double (^)(double))f, double x1, double x2, double xtol);

Where the f block implements the function being solved.

This is a "global function" in that it lives outside of an Objective-C class. I'm not sure if this is the correct term, but I don't want to call it a "C function" since it's being compiled with objc support.

Is there a way to pass a block parameter to a function that lives outside of a class, or does the compiler not support this?

Upvotes: 0

Views: 83

Answers (1)

mspensieri
mspensieri

Reputation: 3521

The problem is that you're placing the argument name in the incorrect place:

double rootSecantMethod(double (^f)(double), double x1, double x2, double xtol);

Upvotes: 3

Related Questions