[...]
> The equivalent code
> if (!((year+2) & 3) && month > 2 && year != 130) is probably
> faster. The somewhat expensive mod operator is
> replaced by a bitwise "and", that is faster on most platforms.
... and your compiler knows that, and should replace the original code by
this one if warranted. Take a look at the assembly output for both
alternatives before proposing optimizations.
-- Dr. Horst H. von Brand mailto:vonbrand@inf.utfsm.cl Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/