comment on

$num = int $num; $num = (~abs($num))+1 if $num < 0;

You can get the same effect with $num |= 0; ...but... why? Why would you want two's complement behavior in other bases?

Truncating at $n bits is mathematically equivalent to:

$num %= 2 ** $n;

That's only meaningful for base-2. You can truncate at $n base-$b digits using this:

$num %= $b ** $n;

So -1 becomes 999999 in base-10 or 666666 in base-7. If you want, you can pick a big number of digits that still fits in a double-precision float like this:

$num %= $base ** int(36.73/log($base));

In reply to Re^3: Math::Base - arithmetics with baseX integers (OP updated) by no_slogan
in thread Math::Base - arithmetics with baseX integers (updated) by shmem

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Your skill will accomplish what the force of many cannot
	PerlMonks