#!/usr/bin/perl -w # for testing subclassing Math::BigFloat package Math::BigFloat::Subclass; require 5.005_02; use strict; use Exporter; use Math::BigFloat(1.38); use vars qw($VERSION @ISA $PACKAGE $accuracy $precision $round_mode $div_scale); @ISA = qw(Exporter Math::BigFloat); $VERSION = 0.05; use overload; # inherit overload from BigInt # Globals $accuracy = $precision = undef; $round_mode = 'even'; $div_scale = 40; 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]; # Store the floating point value my $self = Math::BigFloat->new($value,$a,$p,$round_mode); bless $self, $class; $self->{'_custom'} = 1; # make sure this never goes away return $self; } BEGIN { *objectify = \&Math::BigInt::objectify; # to allow Math::BigFloat::Subclass::bgcd( ... ) style calls *bgcd = \&Math::BigFloat::bgcd; *blcm = \&Math::BigFloat::blcm; } 1;