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|
# -*- mode: perl; -*-
package Math::BigInt::Subclass;
require 5.005_02;
use strict;
use warnings;
use Exporter;
use Math::BigInt;
our @ISA = qw(Math::BigInt Exporter);
our @EXPORT_OK = qw(bgcd objectify);
our $VERSION = "0.07";
use overload; # inherit overload from BigInt
# Globals
our $accuracy = undef;
our $precision = undef;
our $round_mode = Math::BigInt::Subclass -> round_mode();
our $div_scale = Math::BigInt::Subclass -> div_scale();
our $lib = '';
sub new {
my $proto = shift;
my $class = ref($proto) || $proto;
my $value = shift;
my $a = $accuracy; $a = $_[0] if defined $_[0];
my $p = $precision; $p = $_[1] if defined $_[1];
my $self = Math::BigInt->new($value, $a, $p, $round_mode);
bless $self, $class;
$self->{'_custom'} = 1; # make sure this never goes away
return $self;
}
sub bgcd {
Math::BigInt::bgcd(@_);
}
sub blcm {
Math::BigInt::blcm(@_);
}
sub as_int {
Math::BigInt->new($_[0]);
}
BEGIN {
*objectify = \&Math::BigInt::objectify;
# these are called by AUTOLOAD from BigFloat, so we need at least these.
# We cheat, of course..
*bneg = \&Math::BigInt::bneg;
*babs = \&Math::BigInt::babs;
*bnan = \&Math::BigInt::bnan;
*binf = \&Math::BigInt::binf;
*bzero = \&Math::BigInt::bzero;
*bone = \&Math::BigInt::bone;
}
sub import {
my $self = shift;
my @a;
my $t = 0;
foreach (@_) {
# remove the "lib => foo" parameters and store it
if ($t == 1) {
$lib = $_;
$t = 0;
next;
}
if ($_ eq 'lib') {
$t = 1;
next;
}
push @a, $_;
}
$self->SUPER::import(@a); # need it for subclasses
$self->export_to_level(1, $self, @a); # need this ?
}
1;
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