On 01/31/2011 06:47 AM, Eric Blake wrote:
> Is it any more efficient to use short-circuiting operators here (&&
> instead of &)?
I tried it both ways on x86-64 with GCC 4.5.2, and & generated a few
bytes less code than && did. I didn't investigate CPU-time performance,
but I expect it's also a bi
On 01/30/2011 12:02 AM, Paul Eggert wrote:
> +/* Return 1 if the values A and B differ according to the rules for
> + tm_isdst: A and B differ if one is zero and the other positive. */
> +static int
> +isdst_differ (int a, int b)
> +{
> + return (!a != !b) & (0 <= a) & (0 <= b);
Is it any more
---
ChangeLog|8
lib/mktime.c | 18 --
2 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index 362c33f..0277dcd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
2011-01-29 Paul Eggert
+ mktime: systematically
