I’m using the Math::BigFloat module, and noticed in the documentation’s Synopsis that it has a digit() method:

$x->digit($n);          # return the nth digit, counting from right
$x->digit(-$n);         # return the nth digit, counting from left

[download]

But I can’t seem to get it to work:

13:45 >perl -MMath::BigFloat -wE "my $n = Math::BigFloat->new(123); sa
+y $n; say $n->digit(-1);"
123
Can't use an undefined value as an ARRAY reference at C:/Perl/Strawber
+ry/strawberry-perl-5.18.2.1-64bit-portable/perl/lib/Math/BigInt/Calc.
+pm line 1209.

13:45 >p5u v Math::BigFloat
Math::BigFloat
        C:\Perl\Strawberry\strawberry-perl-5.18.2.1-64bit-portable\per
+l\lib\Math\BigFloat.pm: 1.998

13:46 >

[download]

What am I doing wrong?

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Using the Math::BigFloat->digit() method by Athanasius

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.