On Fri, 03 Dec 2010 16:44:42 -0500, Steven Schveighoffer wrote: > On Fri, 03 Dec 2010 16:34:51 -0500, Michal Minich > <michal.min...@gmail.com> wrote: > >> What is performance overhead for casting value of type int to uint and >> in the opposite direction. What happen when I cast int to int or uint >> to uint > > Nothing, there is no performance, type is strictly a compile-time > concept. > >> (for the simplicity in generic code). I suppose there is no difference, >> and it is in fact no-op for processor - it depends only on >> interpretation. Only when making other operations compiler may generate >> different instruction when he considers some value of either of types. >> Am I right? > > Not sure what you mean by that last part... > > -Steve
just that i + i generates different instructions than ui + ui where int i; uint ui; Not really important, because I'm currently interested in cast only. Thank you.
