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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.
+ */
+
+#ifndef FL_NOT_H
+#define FL_NOT_H
+
+#include "fl/hedge/Hedge.h"
+
+namespace fl {
+
+    /**
+      The Not class is a Hedge located first in the ordered set
+      (Not, Seldom, Somewhat, Very, Extremely, Any).
+
+      @author Juan Rada-Vilela, Ph.D.
+      @see Hedge
+      @see HedgeFactory
+      @since 4.0
+     */
+    class FL_API Not FL_IFINAL : public Hedge {
+    public:
+        std::string name() const FL_IOVERRIDE;
+
+        Complexity complexity() const FL_IOVERRIDE;
+
+        /**
+          Computes the hedge for the membership function value @f$x@f$
+          @param x is a membership function value
+          @return @f$1-x@f$
+         */
+        scalar hedge(scalar x) const FL_IOVERRIDE;
+        Not* clone() const FL_IOVERRIDE;
+
+        static Hedge* constructor();
+    };
+}
+
+#endif /* FL_NOT_H */