/usr/share/perl5/Number/Tolerant/Type/plus_or_minus.pm is in libnumber-tolerant-perl 1.702-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | use strict;
use warnings;
# ABSTRACT: a tolerance "m +/- n"
package
Number::Tolerant::Type::plus_or_minus;
use parent qw(Number::Tolerant::Type);
sub construct { shift;
{
value => $_[0],
variance => $_[1],
min => $_[0] - $_[1],
max => $_[0] + $_[1]
}
}
sub parse {
my ($self, $string, $factory) = @_;
my $number = $self->number_re;
return $factory->new("$1", 'plus_or_minus', "$2")
if $string =~ m!\A($number)\s*\+/-\s*($number)\z!;
return;
}
sub stringify { "$_[0]->{value} +/- $_[0]->{variance}" }
sub valid_args {
my $self = shift;
return unless 3 == grep { defined } @_;
return unless $_[1] eq 'plus_or_minus';
return unless defined (my $base = $self->normalize_number($_[0]));
return unless defined (my $var = $self->normalize_number($_[2]));
return ($base, $var);
}
1;
__END__
=pod
=head1 NAME
Number::Tolerant::Type::plus_or_minus - a tolerance "m +/- n"
=head1 VERSION
version 1.702
=head1 AUTHOR
Ricardo Signes <rjbs@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2004 by Ricardo Signes.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
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