[EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> I am sure this is a basic math issue, but is there a better way to
> ensure an int variable is divisible by 4 than by doing the following;
>
> x = 111
> x = (x /4) * 4
You should use // for future compatibility which is guaranteed to be
an integer division whereas / isn't (see "from __future__ import
division")
Eg
(x // 4) * 4
For the particular case of 4 being 2**2, you might consider
x & ~0x3
which is a common idiom.
If you want to round to the next largest 4 then add 3 first, eg
for x in range(0,12):
(x + 3) & ~0x3
Which prints 0,4,4,4,4,8,8,8,8,12...
You could also consider the funky
x>>2<<2
--
Nick Craig-Wood <[EMAIL PROTECTED]> -- http://www.craig-wood.com/nick
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