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/*=========================================================================
*
* Copyright UMC Utrecht and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkHardLimiterFunction_hxx
#define itkHardLimiterFunction_hxx
#include "itkHardLimiterFunction.h"
#include <vnl/vnl_math.h>
namespace itk
{
template <typename TInput, unsigned int NDimension>
auto
HardLimiterFunction<TInput, NDimension>::Evaluate(const InputType & input) const -> OutputType
{
OutputType output = std::min(static_cast<OutputType>(input), this->m_UpperBound);
return (std::max(output, this->m_LowerBound));
} // end Evaluate()
template <typename TInput, unsigned int NDimension>
auto
HardLimiterFunction<TInput, NDimension>::Evaluate(const InputType & input, DerivativeType & derivative) const
-> OutputType
{
if (input > this->m_UpperBound)
{
derivative.Fill(OutputType{});
return (this->m_UpperBound);
}
if (input < this->m_LowerBound)
{
derivative.Fill(OutputType{});
return (this->m_LowerBound);
}
return (static_cast<OutputType>(input));
} // end Evaluate()
} // end namespace itk
#endif
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