Floorf (offsetsIter->x) == offsetsIter->x

I get this error : Floorf (offsetsIter->x) == offsetsIter->x, i do not know what does it means and how i can solve. If anybody know how to solve pls answer me.

Tanks boys, ^^

I guess, it is about the Terrain. I had the same problem, and I am twisting the terrain now.