I would say first of all that your idea of 1 Gb is probably wrong? I presume that you meant 1 GB. The little b means bit, but capital B means byte.

Oooh, this is really complex when dealing with hard disk or memory sizes. One Kilo Byte to an engineer is 1024 bytes. To a marketing guy one KB is 1,000. They do this so that the numbers look bigger!

In "C", I would just use 64 bit int's (or unsigned 64 bit ints) for the vars which use the actual number of bytes for math operations.

So one question that I don't know: can a perl var be assigned to 64 bit precision? If so, then this becomes easier as scaling factors aren't needed. If not then we can do this with 32 bit math.

In reply to Re: Module for file size arithmetic by Marshall
in thread Module for file size arithmetic by mirod

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.