summaryrefslogtreecommitdiff
path: root/lib/integer.pm
blob: a88ce6a77c87284cbfaeb50372a554d6dfa95813 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
package integer;

=head1 NAME

integer - Perl pragma to compute arithmetic in integer instead of double

=head1 SYNOPSIS

    use integer;
    $x = 10/3;
    # $x is now 3, not 3.33333333333333333

=head1 DESCRIPTION

This tells the compiler that it's okay to use integer operations
from here to the end of the enclosing BLOCK.  On many machines, 
this doesn't matter a great deal for most computations, but on those 
without floating point hardware, it can make a big difference.

See L<perlmod/Pragmatic Modules>.

=cut

sub import {
    $^H |= 1;
}

sub unimport {
    $^H &= ~1;
}

1;