On Tue, Jun 24, 2014 at 07:32:10PM +0200, FRIGN wrote: > We are dealing with floats with at most 2 decimal places. I propose we > just go for > > CEIL(x) ((int)(x) + ((x) > 0 && (int)(x) != (x))) >
Well, if we know that much already then the easiest to read version would be: #define CEIL(x) ((int)(x >= 0? x + .99 : x)) And done! That should returns 3 when anything between 2.01 and 3.01 is entered (excluding the upper boundary). Alternatively: #define INSIGNIFICANT 1e-2 /* values and differences below this don't matter */ #define CEIL(x) ((int)(x >= 0? x + 1 - INSIGNIFICANT : x)) That's easier to adjust. Ciao, Markus
