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/*
Author: Juan Rada-Vilela, Ph.D.
Copyright (C) 2010-2014 FuzzyLite Limited
All rights reserved
This file is part of fuzzylite.
fuzzylite is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
fuzzylite is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
for more details.
You should have received a copy of the GNU Lesser General Public License
along with fuzzylite. If not, see <http://www.gnu.org/licenses/>.
fuzzylite™ is a trademark of FuzzyLite Limited.
*/
#include "fl/hedge/Seldom.h"
#include "fl/Operation.h"
namespace fl {
std::string Seldom::name() const {
return "seldom";
}
scalar Seldom::hedge(scalar x) const {
return Op::isLE(x, 0.5)
? std::sqrt(x / 2.0)
: 1.0 - std::sqrt((1.0 - x) / 2.0);
}
Seldom* Seldom::clone() const {
return new Seldom(*this);
}
Hedge* Seldom::constructor() {
return new Seldom;
}
}
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