On Fri, 20 Apr 2007 20:55:49 -0400 (EDT) "John Anthony Kazos Jr." <[EMAIL PROTECTED]> wrote:
> +#define upper_32_bits(n) (sizeof(n) == 8 ? (u64)(n) >> 32 : 0) It's very unclear what type this returns, in terms of both size and signedness. Perhaps it always returns a u64, dunno. If it does, that will cause the arithmetic which uses this macro to go 64-bit too. Casting the whole return value to u32 would fix all those doubts up. > +#define lower_32_bits(n) (sizeof(n) == 8 ? (u32)(n) : (n)) n&0xffffffff would be simpler. Do we actually have any call for this? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
