Add p5-Math-Logic 1.19, a perl module providing pure 2, 3 or multi-value

logic.

PR:		21420
Submitted by:	Mario Sergio Fujikawa Ferriera <lioux@uol.com.br>

1 files changed, 10 insertions, 0 deletions

diff --git a/math/p5-Math-Logic/pkg-descr b/math/p5-Math-Logic/pkg-descr
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+Perl's built-in logical operators, C<and>, C<or>, C<xor> and C<not>
+support 2-value logic. This means that they always produce a result
+which is either true or false. In fact perl sometimes returns 0
+and sometimes returns undef for false depending on the operator
+and the order of the arguments. For "true" Perl generally returns
+the first value that evaluated to true which turns out to be
+extremely useful in practice. Given the choice Perl's built-in
+logical operators are to be preferred -- but when you really want
+pure 2-degree logic or 3-degree logic or multi-degree logic they
+are available through this module