Hi John; --- Lun 9/1/12, John-Mark Gurney <j...@funkthat.com> ha scritto: ... > Pedro F. Giffuni wrote this message > on Tue, Jan 03, 2012 at 19:47 +0000: > > +#define SL_SWAP(a,b) > {a^=b; b^=a; a^=b;} > > Can we replace this w/ a normal swap function? >
> Last time I did benchmarking on this ~10 years ago, it was > slower to use xor instead of using assignments... > I doubt it's worth it, the swapping is not critical here and doing a swap saves a temporary variable (not that they are expensive either). cheers, Pedro. > -- > John-Mark Gurney > > Voice: +1 415 225 5579 > > "All that I will do, has been > done, All that I have, has not." > _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"