Trying to use bignum (obviously), which I have never used before. I thought that once I had a variable as a extra precision number, it would stay that way. It seems I need to specify something else, but exactly what remains elusive to me.

#!/usr/bin/perl -w
use strict;

use bignum;
use Digest::SHA qw(sha256_hex);

my $i = 1;
my $digest = hex(sha256_hex($i));

# just for debugging
print "$digest\n";
$digest /= 64;
print "$digest\n";


4863546394320983479810981416129475392683997525756979530563709854272065
+8922315
7599291241126536687204658462702305301069000000000000000000000000000000
+00000

[download]
I expected to see: 
4863546394320983479810981416129475392683997525756979530563709854272065
+8922315
7599291241126536687204658462702305301068746133995280516505796647300102
+95661

[download]

In reply to Why am I losing accuracy? by Anonymous Monk

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.