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/*
fuzzylite (R), a fuzzy logic control library in C++.
Copyright (C) 2010-2017 FuzzyLite Limited. All rights reserved.
Author: Juan Rada-Vilela, Ph.D. <jcrada@fuzzylite.com>
This file is part of fuzzylite.
fuzzylite is free software: you can redistribute it and/or modify it under
the terms of the FuzzyLite License included with the software.
You should have received a copy of the FuzzyLite License along with
fuzzylite. If not, see <http://www.fuzzylite.com/license/>.
fuzzylite is a registered trademark of FuzzyLite Limited.
*/
#include "catch2/catch.hpp"
#include "fl/Headers.h"
namespace fl {
/**
* Tests: term/Triangle
*
* @author Juan Rada-Vilela, Ph.D.
*
*/
TEST_CASE("triangle can be open ended with -infinity", "[term][triangle]") {
Triangle triangle("A", -fl::inf, 0, 1);
Ramp ramp("a", 1, 0);
for (int i = -10; i < 2; ++i) {
FL_DBG("A(" << i << ")=" << triangle.membership(i));
FL_DBG("a(" << i << ")=" << ramp.membership(i));
REQUIRE(Op::isEq(triangle.membership(i), ramp.membership(i)));
}
REQUIRE(Op::isEq(triangle.membership(-fl::inf), 1.0));
REQUIRE(Op::isEq(triangle.membership(fl::inf), 0.0));
}
TEST_CASE("triangle can be open ended with +infinity", "[term][triangle]") {
Triangle triangle("A", 0, 1, fl::inf);
Ramp ramp("a", 0, 1);
for (int i = 10; i >= -2; --i) {
FL_DBG("A(" << i << ")=" << triangle.membership(i));
FL_DBG("a(" << i << ")=" << ramp.membership(i));
REQUIRE(Op::isEq(triangle.membership(i), ramp.membership(i)));
}
REQUIRE(Op::isEq(triangle.membership(fl::inf), 1.0));
REQUIRE(Op::isEq(triangle.membership(-fl::inf), 0.0));
}
TEST_CASE("triangle defuzzification is correct", "[term][triangle]") {
Triangle a("A", 0, 1, 2);
Triangle b("B", 1, 2, 3);
AlgebraicProduct times;
Aggregated x("X", 0, 3, new AlgebraicSum);
x.addTerm(&a, 1, ×);
x.addTerm(&b, 1, ×);
Centroid c(101);
FL_LOG(c.defuzzify(&x, 0, 3));
Triangle t("T", 0, 0, 1);
FL_LOG(c.defuzzify(&t, 0, 1));
}
}
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