It is not very consistent. Consider: 

$ perl -MDevel::Peek -e'$x="1e1"; 0+$x; Dump($x)'
SV = PVNV(0xc27550) at 0xc48bc8
  REFCNT = 1
  FLAGS = (IOK,NOK,POK,pIOK,pNOK,pPOK)
  IV = 10
  NV = 10
  PV = 0xc37d80 "1e1"\0
  CUR = 3
  LEN = 16
$perl -MDevel::Peek -e'$x="1.1e1"; 0+$x; Dump($x)'
SV = PVNV(0x1513550) at 0x1534bc8
  REFCNT = 1
  FLAGS = (IOK,NOK,POK,pIOK,pNOK,pPOK)
  IV = 11
  NV = 11
  PV = 0x1523d80 "1.1e1"\0
  CUR = 5
  LEN = 16

[download]

Something smells here. I think that patch needs to be reviewed and supplanted.

---
$world=~s/war/peace/g

In reply to Re^4: Any reason NV is not marked as POK when accessed as string? by demerphq
in thread Any reason NV is not marked as POK when accessed as string? by vr

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.