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| Current File : //usr/share/perl/5.26.1/Math/BigFloat/Trace.pm |
#!perl
package Math::BigFloat::Trace;
require 5.006;
use strict;
use warnings;
use Exporter;
use Math::BigFloat;
our ($accuracy, $precision, $round_mode, $div_scale);
our @ISA = qw(Exporter Math::BigFloat);
our $VERSION = '0.47';
use overload; # inherit overload from Math::BigFloat
# 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];
my $self = Math::BigFloat->new($value, $a, $p, $round_mode);
# remember, downgrading may return a BigInt, so don't meddle with class
# bless $self, $class;
print "MBF new '$value' => '$self' (", ref($self), ")";
return $self;
}
sub import {
print "MBF import ", join(' ', @_);
my $self = shift;
# we catch the constants, the rest goes go BigFloat
my @a = ();
foreach (@_) {
push @a, $_ if $_ ne ':constant';
}
overload::constant float => sub { $self->new(shift); };
Math::BigFloat->import(@a); # need it for subclasses
# $self->export_to_level(1,$self,@_); # need this ?
}
1;
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