The flow of the code does seem straight forward enough to suggest that it might by a representation issue. Rather than printing the values, you might consider printing the differences - if they are not literally identical, this should reveal what's getting lost (though I thought there was no truncation in an unformatted print statement). If this does prove to be the issue, you can avoid the false positives by setting a tolerance, e.g.:

my $tolerance = 1.0e-16; # Change this value based on observation
if ($tolerance*abs($range_min + $change_min) < abs($range_min - $chang
+e_min)) {
    print "$variable has different minimum value:\n";
    print "  Change list: $changes{$variable}{min} ($changes{$variable
+}{sheet})\n";
    print "  Range file : $range_file{$variable}{min} ($range_file{$va
+riable}{sheet})\n";
    my $difference = $range_min - $change_min
    print "  Difference : $difference\n";
}

[download]

In reply to Re: False positive on inequality comparison by kennethk
in thread False positive on inequality comparison by Nkuvu

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.