#-*-cperl-*-

=head1 Boolean PMC

Implementation of a generic boolean value.

=head2 Creation

To create a PMC boolean use

   new P0, .Boolean

And P0 will contain a false boolean object.

=head2 Setting/Getting values

To set values, use the C<set> operator. To set the boolean element to
true, use

   set P0, 1

Note that you can set any value. The value, integer, number or string
will be evaluated in it's trueness as in Perl.

Integers or numbers different from zero are true. Strings are true
unless empty or with the zero character.

To get the value from the object use

   set I0, P0

While you can use other register types, you shouldn't.

=head2 Logic operators

As with other data-types, you can use C<and>, C<or>, C<xor> and C<not>
operators

   xor P0, P1, P2    # P0 = P1 xor P2

   and P0, P1, P2    # P0 = P1 and P2

   or  P0, P1, P2    # P0 = P1 or  P2

   not P0, P1        # P0 = not P1

=cut