That is the long version of how you can see that info :)

C:\Users\Tux>perl -V:ptrsize
ptrsize='4';

C:\Users\Tux>perl -V:ivsize
ivsize='4';

C:\Users\Tux>perl -V:nvsize
nvsize='8';

C:\Users\Tux>

[download]

Note that ptrsize shows the size of the pointers. The length 8 indicates 64bit pointers. But even on 32bit perl installations, you can have 64bit integers: when perl was built with -Duse64bitint, and long doubles: when perl was built with -Duselongdouble.

To solve a problem that needs native huge numbers that do not fit in 32bit integers, having a perl that supports 64bit integers is often enough. Here's such a perl on a 32bit Linux with both

tux > perl -V:ptrsize
ptrsize='4';
tux > perl -V:ivsize
ivsize='8';
tux > perl -V:nvsize
nvsize='12';
tux >

[download]

compare that to a build without -Duselongdouble on the same machine:

tux > perl5.8.8 -V:ptrsize
ptrsize='4';
tux > perl5.8.8 -V:ivsize
ivsize='8';
tux > perl5.8.8 -V:nvsize
nvsize='8';
tux >

[download]

and this is on 64bit Linux:

tux > perl -V:ptrsize
ptrsize='8';
tux > perl -V:ivsize
ivsize='8';
tux > perl -V:nvsize
nvsize='16';
tux >

[download]

to complete this info story, -V: accepts perl regular expressions:

$ perl -V:.*size
charsize='1';
d_chsize='undef';
d_malloc_good_size='undef';
d_malloc_size='undef';
doublesize='8';
fpossize='16';
gidsize='4';
i16size='2';
i32size='4';
i64size='8';
i8size='1';
intsize='4';
ivsize='8';
longdblsize='16';
longlongsize='8';
longsize='8';
lseeksize='8';
nvsize='16';
ptrsize='8';
shortsize='2';
sig_size='69';
sizesize='8';
u16size='2';
u32size='4';
u64size='8';
u8size='1';
uidsize='4';
uvsize='8';
$

[download]

Enjoy, Have FUN! H.Merijn

In reply to Re^2: How to find out if it is 32bit or 64bit windows? by Tux
in thread How to find out if it is 32bit or 64bit windows? 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.