Q:

How to make a modulo operation in objective-c / cocoa touch?

I have two CGFloat values, and want to calculate the modulo result. Or in other words: I want to know what's left if valueA is placed as much as possible into valueB.
So I just tried:
CGFloat moduloResult = valueB % valueA;

the compiler complains about the % and tells me: "invalid operands to binary %". Any idea?

A:

% is for int or long, not float or double.
You can use fmod() or fmodf() from <math.h> instead.
Better is <tgmath.h> as suggested by the inventor of CGFloat.

A:

If I remember correctly modulo requires 2 ints as its input so you'd need something like:
CGFloat moduloResult = (float)((int)valueB % (int)valueA);

Assuming that valueB and valueA are both floats

