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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_UNBOUNDEDSUM_H
+#define FL_UNBOUNDEDSUM_H
+
+#include "fl/norm/SNorm.h"
+
+namespace fl {
+
+    /**
+      The UnboundedSum class is an SNorm that computes the sum of any two values.
+
+      @author Juan Rada-Vilela, Ph.D.
+      @see BoundedSum
+      @see SNorm
+      @see SNormFactory
+      @see Norm
+      @since 4.0
+     */
+    class FL_API UnboundedSum FL_IFINAL : public SNorm {
+    public:
+        std::string className() const FL_IOVERRIDE;
+
+        Complexity complexity() const FL_IOVERRIDE;
+        /**
+          Computes the bounded sum of two membership function values
+          @param a is a membership function value
+          @param b is a membership function value
+          @return @f$\min(1, a+b)@f$
+         */
+        scalar compute(scalar a, scalar b) const FL_IOVERRIDE;
+        UnboundedSum* clone() const FL_IOVERRIDE;
+
+        static SNorm* constructor();
+    };
+}
+
+#endif  /* FL_BOUNDEDSUM_H */