ldexp.hpp

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#pragma once
 
#include <cmath>
#include <string>
 
#include "NumCpp/Core/Internal/Error.hpp"
#include "NumCpp/Core/Internal/StaticAsserts.hpp"
#include "NumCpp/Core/Internal/StlAlgorithms.hpp"
#include "NumCpp/Core/Types.hpp"
#include "NumCpp/NdArray.hpp"
 
namespace nc
{
    //============================================================================
    // Method Description:
    template<typename dtype>
    dtype ldexp(dtype inValue1, uint8 inValue2) noexcept
    {
        STATIC_ASSERT_ARITHMETIC(dtype);
 
        return static_cast<dtype>(std::ldexp(static_cast<double>(inValue1), inValue2));
    }
 
    //============================================================================
    // Method Description:
    template<typename dtype>
    NdArray<dtype> ldexp(const NdArray<dtype>& inArray1, const NdArray<uint8>& inArray2)
    {
        if (inArray1.shape() != inArray2.shape())
        {
            THROW_INVALID_ARGUMENT_ERROR("input array shapes are not consistant.");
        }
 
        NdArray<dtype> returnArray(inArray1.shape());
        stl_algorithms::transform(inArray1.cbegin(),
                                  inArray1.cend(),
                                  inArray2.cbegin(),
                                  returnArray.begin(),
                                  [](dtype inValue1, uint8 inValue2) noexcept -> dtype
                                  { return ldexp(inValue1, inValue2); });
 
        return returnArray;
    }
} // namespace nc