Re: xor as a lazy comparison

From: Bill Davidsen
Date: Mon Jul 25 2005 - 15:24:22 EST

Lee Revell wrote:
On Mon, 2005-07-25 at 13:55 -0400, Steven Rostedt wrote:

Doesn't matter. The cycles saved for old compilers is not rational to
have obfuscated code.

Where do we draw the line with this? Is x *= 2 preferable to x <<= 2 as

In addition to the obvious error, let's not use x += x as well. If you want to multiple by two, do it.

Wasn't there a CPU where multiple was faster than add? Doesn't matter, let the compiler make the optimizations so you don't have to.

-bill davidsen (davidsen@xxxxxxx)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
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