limiter.h

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/******************************************************************************
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Embedded Template Library.
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Copyright(c) 2021 John Wellbelove
 
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#ifndef ETL_LIMITER_INCLUDED
#define ETL_LIMITER_INCLUDED
 
#include "platform.h"
#include "functional.h"
#include "type_traits.h"
#include "algorithm.h"
 
#include <stdint.h>
 
namespace etl
{
  namespace private_limiter
  {
    template<typename TInput>
    struct limit
    {
      TInput operator ()(TInput value, TInput lowest, TInput highest) const
      {
        return etl::clamp(value, lowest, highest);
      }
    };
  }
 
  //***************************************************************************
  //***************************************************************************
  template<typename TInput, typename TLimit = etl::private_limiter::limit<TInput> >
  class limiter : public etl::unary_function<TInput, TInput>
  {
  public:
 
    //*****************************************************************
    // Constructor.
    //*****************************************************************
    limiter(TInput lowest_, TInput highest_)
      : lowest(lowest_)
      , highest(highest_)
    {
    }
 
    //*****************************************************************
    // operator ()
    //*****************************************************************
    TInput operator ()(TInput value) const
    {
      return TLimit()(value, lowest, highest);
    }
 
  private:
 
    const TInput lowest;
    const TInput highest;
  };
}
 
#endif