Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
And an even faster WTDI:
sub next_pwr { my ($x,$p) = (@_,2); # default to next_pwr(X,2) my $log = log($x)/log($p); $log = int($log+1) if $log != int($log); return $p**$log; }
You can even add a log() memoization in there:
{ my %LOG = (2 => log(2)); # most common sub next_pwr { my ($x,$p) = (@_,2); # default to next_pwr(X,2) # assertions, etc. die "illegal base: $p" if $p < 2; return 1 if $x == 1; $p = int $p; my $log = ($LOG{$x} ||= log($x)) / ($LOG{$p} ||= log($p)); $log = int($log+1) if $log != int($log); return $p ** $log; } }


japhy -- Perl and Regex Hacker

In reply to Re: Re (tilly) 1: Power of two round up. by japhy
in thread Power of two round up. by boo_radley

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others rifling through the Monastery: (8)
    As of 2014-12-20 13:58 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      Is guessing a good strategy for surviving in the IT business?





      Results (95 votes), past polls