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package GIS::Distance::Null;
use 5.008001;
use strictures 2;
our $VERSION = '0.20';
use parent 'GIS::Distance::Formula';
sub _distance { 0 }
1;
__END__
=encoding utf8
=head1 NAME
GIS::Distance::Null - For planets with no surface.
=head1 DESCRIPTION
Always returns C<0>.
A faster (XS) version of this formula is available as
L<GIS::Distance::Fast::Null>.
Normally this module is not used directly. Instead L<GIS::Distance>
is used which in turn interfaces with the various formula classes.
=head1 FORMULA
d = 0
=head1 SEE ALSO
=over
=item *
L<https://en.wikipedia.org/wiki/0>
=item *
L<GIS::Distance::Fast::Null>
=back
=head1 SUPPORT
See L<GIS::Distance/SUPPORT>.
=head1 AUTHORS
See L<GIS::Distance/AUTHORS>.
=head1 LICENSE
See L<GIS::Distance/LICENSE>.
=cut
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