On Mon, Jan 25, 2010 at 10:57:07AM +0100, Bruno Haible wrote: > Robert Millan wrote: > > > - In the average case, you can get away with 1 strftime call instead of > > > 2, > > > if you preallocate a buffer on the stack: > > > char buf[256]; > > > len = strftime (buf, sizeof (buf), "%c", loctime) + 1; > > > In the case where 256 bytes are not enough, the function will need > > > 3 strftime calls instead of 1, but this case should be pretty rare > > > (even in Chinese and GB18030 encoding, 64 characters should be enough > > > for a date + time display). > > > > What about http://www.gnu.org/prep/standards/standards.html#Semantics ? > > Avoiding arbitrary limits is a good thing IMO. > > I'm not suggesting to introduce an arbitrary limit, but rather a threshold > below which the implementation is more efficient that above the threshold.
Ok then. But if I preallocate a buffer on the stack, then xctime() can't return it. I suppose you want it to preallocate on heap? -- Robert Millan "Be the change you want to see in the world" -- Gandhi
