1 # NAME
3 Acme::Test::LogicalEquivalence - Test if expressions are logically equivalent
5 # VERSION
7 version 0.001
9 # SYNOPSIS
11 use Test::More;
12 use Acme::Test::LogicalEquivalence qw(is_logically_equivalent);
14 # test two expressions with 2 variables using the special vars \$a and \$b
15 is_logically_equivalent(2, sub { \$a && \$b }, sub { \$b && \$a });
17 # same as above
18 is_logically_equivalent(2, sub { \$_[0] && \$_[1] }, sub { \$_[1] && \$_[0] });
20 # you can do as many vars as you like
21 is_logically_equivalent(3, sub { \$_[0] || (\$_[1] && \$_[2]) },
22 sub { (\$_[0] || \$_[1]) && (\$_[0] || \$_[2]) });
24 done_testing;
26 # DESCRIPTION
28 Some expressions are "logically equivalent" to other expressions, but it may not be easy to tell if
29 one or both of the expressions are reasonably complicated. Or maybe you're like many other people
30 and are too lazy to go through the effort... Either way, why not let your computer prove logical
31 equivalence for you?
33 # FUNCTIONS
35 ## is\_logically\_equivalent
37 Test logical equivalence of two subroutines.
39 my \$is_equivalent = is_logically_equivalent(\$numvars, &sub1, &sub2);
41 This will execute both of the subroutines one or more times (depending on how many variables you
42 specify) with different inputs. The subroutines shall be considered logically equivalent if, for all
43 combinations of inputs, they both return the same thing.
45 Returns true if the subroutines are logically equivalent, false otherwise.