How to safely floor or ceil a CGFloat to int?

Question

I often need to floor or ceil a CGFloat to an int, for calculation of an array index.

The problem I permanently see with floorf(theCGFloa

Answer 1

EDIT - read the comments for reasons why this answer isn't right :)

Casting a float to an int is an implicit floorf i.e. (int)5.9 is 5. If you don't mind that then just cast :)

If you want to round up then just cast the result of a ceilf - casting after rounding shouldn't introduce any errors at all (or, if you want, add one before casting i.e. `(int)(5.9+1)' is '6' - same as rounding up).

To round to the nearest, just add 0.5 - (int)(5.9+0.5) is 6 but (int)(5.4+0.5) is 5. Though I would just use roundf(5.9) :)