On Tue, Jun 24, 2014 at 5:03 PM, FRIGN <d...@frign.de> wrote: > On Tue, 24 Jun 2014 09:46:33 -0500 > Eric Pruitt <eric.pru...@gmail.com> wrote: > >> CEIL(x) ((int)(x) + ((x) > 0)) >> >> Perhaps I'm missing something here, but this completely fails whenever >> (x) is already a whole number; CEIL(3.0) => 4.0 which is not the correct >> behaviour. > > Damn, you are right -.-. Back to the drawing board. >
True. Hence, and following other sources about this topic [0], I suggest #define CEIL(x) ((int)(x) + ((int)(x) > 0) * ((x - (int)(x)) > FLT_EPSILON)) cheers! mar77i [0] http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
