Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Everyone else given you the why.

Here's a suggestion towards what to do about it.

  • Rule #{ return int rand 31415927; }: Never let the printf family do your rounding for you.
  • Rule #{ return int rand 31415927; }: Specifically round arithmetically using your own rules and you should at least get consistent results.
  • Rule #{ return int rand 31415927; }: Use the "add half of the next digit" technique if you wish to force 0.0{...}05 to round up.


#!/usr/bin/perl -w use strict; my $floatNumber = 0.345; my $roundToTwoDecimals = int($floatNumber * 100) / 100; printf "\$roundToTwoDecimals = %0.02f\n", $roundToTwoDecimals; my $forcedRounding = int(($floatNumber + 0.005) * 100) / 100; printf " \$forcedRounding = %0.02f\n", $forcedRounding; exit; __END__ C:\Steve\Dev\PerlMonks\P-2013-09-16@1955-Rounding> $roundToTwoDecimals = 0.34 $forcedRounding = 0.35

In reply to Re: Printf/Sprintf Behavior Change by marinersk
in thread Printf/Sprintf Behavior Change by stingles

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, 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
  • 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.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others examining the Monastery: (6)
    As of 2017-10-22 23:24 GMT
    Find Nodes?
      Voting Booth?
      My fridge is mostly full of:

      Results (275 votes). Check out past polls.