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;