Can't get your code to work. It dies with message: 
Operation `**': no method found,
        left argument in overloaded package Math::BigFloat,
        right argument has no overloaded magic at test.pl line 17.

[download]

Update:

BTW It seems that using Math::BigFloat methods directly is slighly faster then relying on overloaded operations: 


use Benchmark;
use Math::BigFloat;

timethese(1000, {
    Methods => sub { Math::BigFloat->new(100)->fmul(Math::BigFloat->ne
+w(100)) },
    Operations => sub { Math::BigFloat->new(100) * Math::BigFloat->new
+(100) },
});



bash-2.05a$ perl test.pl
Benchmark: timing 1000 iterations of Methods, Operations...
   Methods:  2 wallclock secs ( 1.48 usr +  0.01 sys =  1.49 CPU) @ 67
+1.14/s (n=1000)
Operations:  1 wallclock secs ( 1.63 usr +  0.00 sys =  1.63 CPU) @ 61
+3.50/s (n=1000)

[download]

--
Ilya Martynov (http://martynov.org/)

In reply to Re: Help w/ Code Optimization by IlyaM
in thread Help w/ Code Optimization by sifukurt

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.