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diff --git a/fuzzylite/src/term/Binary.cpp b/fuzzylite/src/term/Binary.cpp
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+++ b/fuzzylite/src/term/Binary.cpp
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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 "fl/term/Binary.h"
+
+namespace fl {
+
+    Binary::Binary(const std::string& name, scalar start, scalar direction, scalar height)
+    : Term(name, height), _start(start), _direction(direction) { }
+
+    Binary::~Binary() { }
+
+    std::string Binary::className() const {
+        return "Binary";
+    }
+
+    Complexity Binary::complexity() const {
+        return Complexity().comparison(5).arithmetic(1);
+    }
+
+    scalar Binary::membership(scalar x) const {
+        if (Op::isNaN(x)) return fl::nan;
+        if (_direction > _start and Op::isGE(x, _start)) {
+            return Term::_height * 1.0;
+        }
+        if (_direction < _start and Op::isLE(x, _start)) {
+            return Term::_height * 1.0;
+        }
+        return Term::_height * 0.0;
+    }
+
+    std::string Binary::parameters() const {
+        return Op::join(2, " ", _start, _direction) +
+                (not Op::isEq(getHeight(), 1.0) ? " " + Op::str(getHeight()) : "");
+    }
+
+    void Binary::configure(const std::string& parameters) {
+        if (parameters.empty()) return;
+        std::vector<std::string> values = Op::split(parameters, " ");
+        std::size_t required = 2;
+        if (values.size() < required) {
+            std::ostringstream ex;
+            ex << "[configuration error] term <" << className() << ">"
+                    << " requires <" << required << "> parameters";
+            throw Exception(ex.str(), FL_AT);
+        }
+        setStart(Op::toScalar(values.at(0)));
+        setDirection(Op::toScalar(values.at(1)));
+        if (values.size() > required)
+            setHeight(Op::toScalar(values.at(required)));
+    }
+
+    void Binary::setStart(scalar minimum) {
+        this->_start = minimum;
+    }
+
+    scalar Binary::getStart() const {
+        return this->_start;
+    }
+
+    void Binary::setDirection(scalar direction) {
+        this->_direction = direction;
+    }
+
+    scalar Binary::getDirection() const {
+        return this->_direction;
+    }
+
+    Binary::Direction Binary::direction() const {
+        if (this->_direction > _start) return Positive;
+        if (this->_direction < _start) return Negative;
+        return Undefined;
+    }
+
+    Binary* Binary::clone() const {
+        return new Binary(*this);
+    }
+
+    Term* Binary::constructor() {
+        return new Binary;
+    }
+
+}