text: /*
   * Copyright 2013-2022 Step Function I/O, LLC
   *
   * Licensed to Green Energy Corp (www.greenenergycorp.com) and Step Function I/O
   * LLC (https://stepfunc.io) under one or more contributor license agreements.
   * See the NOTICE file distributed with this work for additional information
   * regarding copyright ownership. Green Energy Corp and Step Function I/O LLC license
   * this file to you 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
   *
   * 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 OPENDNP3_DOWNSAMPLING_H
  #define OPENDNP3_DOWNSAMPLING_H
  
  #include "opendnp3/util/Uncopyable.h"
  
  #include <cstdint>
  #include <limits>
  
  namespace opendnp3
  {
  
  // A safe down sampling class
  template<class Source, class Target> class DownSampling : private Uncopyable
  {
      static const Target TARGET_MAX;
      static const Target TARGET_MIN;
  
  public:
      static bool Apply(Source src, Target& target)
      {
          if (src > TARGET_MAX)
          {
              target = TARGET_MAX;
              return true;
          }
          else if (src < TARGET_MIN)
          {
              target = TARGET_MIN;
              return true;
          }
          else
          {
              target = static_cast<Target>(src);
              return false;
          }
      }
  };
  
  template<class Source, class Target>
  const Target DownSampling<Source, Target>::TARGET_MAX(std::numeric_limits<Target>::max());
  
  template<class Source, class Target>
  const Target DownSampling<Source, Target>::TARGET_MIN(std::numeric_limits<Target>::lowest());
  
  } // namespace opendnp3
  
  #endif
  