Math::Int64 - Manipulate 64 bits integers in Perl
use Math::Int64 qw(int64); my $i = int64(1); my $j = $i << 40; my $k = int64("12345678901234567890"); print($i + $j * 1000000);
This module adds support for 64 bit integers, signed and unsigned, to Perl.
Creates a new int64 value and initializes it to $value, where $value can be a Perl number or a string containing a number.
$value
For instance:
$i = int64(34); $j = int64("-123454321234543212345"); $k = int64(1234567698478483938988988); # wrong!!! # the unquoted number would # be converted first to a # real number causing it to # loose some precision.
Once the int64 number is created it can be manipulated as any other Perl value supporting all the standard operations (addition, negation, multiplication, postincrement, etc.).
Converts an 8 bytes string containing an int64 in network order to the internal representation used by this module.
Returns an 8 bytes string with the representation of the int64 value in network order.
similar to net_to_int64 and int64_to_net, but using the native CPU order.
returns the optimum representation of the int64 value using Perl internal types (IV, UV or NV). Precision could be lost.
for my $l (10, 20, 30, 40, 50, 60) { my $i = int64(1) << $l; my $n = int64_to_number($i); print "int64:$i => perl:$n\n"; }
These functions are similar to their int64 counterparts, but manipulate 64 bit unsigned integers.
At this moment, this module requires int64 support from the C compiler. Also, it doesn't take any advantage of perls with 64 bit IVs.
For bug reports, feature requests or just help using this module, use the RT system at http://rt.cpan.org or send my and email or both!
Other modules that allow Perl to support larger integers or numbers are Math::BigInt, Math::BigRat and Math::Big, Math::BigInt::BitVect, Math::BigInt::Pari and Math::BigInt::GMP.
Salvador Fandiño, <sfandino@yahoo.com>
Copyright (C) 2007 by Salvador Fandiño
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or, at your option, any later version of Perl 5 you may have available.
To install Math::Int64, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Math::Int64
CPAN shell
perl -MCPAN -e shell install Math::Int64
For more information on module installation, please visit the detailed CPAN module installation guide.