Hi.. I've run into a bit of whackiness that I'm at a loss to explain, I've tried this on 3 different machines (all running some flavor of linux), and the behaviour repeats. Perhaps I'm incorrect in my use of printf, but I've found nothing indicating this..

I'm attempting to round a number to 2 decimal places: 
my (@numbers) = qw( 0.256 0.255 0.254 );
printf("%0.2f\n", $_) foreach @numbers;

printf("%0.2f\n", 1.255);

[download]
I'd expect results like: 
0.26
0.26
0.25
1.26

[download]
But what I'm seeing are results like: 
0.26
0.26
0.25
1.25

[download]
Notice the 1.25 vs 1.26 that I'd expect..

As I said, I'm confused.. feel free to smite me down if I've pulled some kind of noob mistake.

In reply to Rounding a number using (s)printf by the_slycer

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!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • 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, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            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.