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# -*- mode: perl; -*- |
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package Math::BigInt::Constant; |
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69767
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use strict; |
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use warnings; |
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our $VERSION = '1.15'; |
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use Math::BigInt '1.999802'; |
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40197
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our @ISA = qw( Math::BigInt ); |
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use overload; # inherit from Math::BigInt |
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############################################################################## |
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# We Are a True Math::BigInt, But Thou Shallst Not Modify Us |
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sub modify { |
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my ($self, $method) = @_; |
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unless (defined $method) { |
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my @callinfo = caller(0); |
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for (my $i = 1 ; ; ++$i) { |
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my @next = caller($i); |
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last unless @next; |
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@callinfo = @next; |
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} |
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$method = $callinfo[3]; |
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} |
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die("Can not modify ", ref($self), " $self via $method()\n"); |
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} |
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############################################################################## |
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# But cloning us creates a modifyable Math::BigInt, so that overload works |
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sub copy { |
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28839
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my $x = shift; |
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return Math::BigInt->new($x) unless ref($x); |
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Math::BigInt->copy($x); |
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} |
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1; |
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__END__ |