Finding the nearest integer is still easy with just the int function:

#! perl
use strict;
use warnings;
use bignum;

while (my $num = <DATA>)
{
    chomp $num;
    print 'float = ', $num, ', nearest int = ', int ($num + 0.5), "\n"
+;
}

__DATA__
12345.6789
1_234_500_000_000_000_000_000_000.6789
10.49
11.5
12.500000001
1_234_500_000_000_000_000_000_042.499999
13

[download]

Output:

float = 12345.6789, nearest int = 12346
float = 1_234_500_000_000_000_000_000_000.6789, nearest int = 12345000
+00000000000000001
float = 10.49, nearest int = 10
float = 11.5, nearest int = 12
float = 12.500000001, nearest int = 13
float = 1_234_500_000_000_000_000_000_042.499999, nearest int = 123450
+0000000000000000042
float = 13, nearest int = 13

[download]

:-)

Athanasius <°(((>< contra mundum

In reply to Re^3: bignum frustration by Athanasius
in thread bignum frustration by not_japh

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.