clip.hpp

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#pragma once
 
#include <algorithm>
 
#include "NumCpp/Core/Internal/StaticAsserts.hpp"
#include "NumCpp/Core/Internal/StdComplexOperators.hpp"
#include "NumCpp/NdArray.hpp"
 
namespace nc
{
    //============================================================================
    // Method Description:
    template<typename dtype>
    dtype clip(dtype inValue, dtype inMinValue, dtype inMaxValue)
    {
        STATIC_ASSERT_ARITHMETIC_OR_COMPLEX(dtype);
 
#ifdef __cpp_lib_clamp
        const auto comparitor = [](dtype lhs, dtype rhs) noexcept -> bool { return lhs < rhs; };
 
        return std::clamp(inValue, inMinValue, inMaxValue, comparitor);
#else
        if (inValue < inMinValue)
        {
            return inMinValue;
        }
        else if (inValue > inMaxValue)
        {
            return inMaxValue;
        }
 
        return inValue;
#endif
    }
 
    //============================================================================
    // Method Description:
    template<typename dtype>
    NdArray<dtype> clip(const NdArray<dtype>& inArray, dtype inMinValue, dtype inMaxValue)
    {
        return inArray.clip(inMinValue, inMaxValue);
    }
} // namespace nc