if(IN_RANGE_CLOSED(dw_result,0,WHATEVER)) Build the appropriate model for IN_RANGE, and done. Has the benefit that you explicitly state the type of range (ope

if(IN_RANGE_CLOSED(dw_result,0,WHATEVER)) Build the appropriate model for IN_RANGE, and done. Has the benefit that you explicitly state the type of range (open|closed|half-open[LR]), so you'll be a bit more likely to think about the edge cases. Is it painful? Yes. I'd rather take that pain than debugging crash reports, though. (YMMV - it certainly depends on what you are building, how large your audience is, and what the consequences of a crash are)