polar.hpp

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#pragma once
 
#include <complex>
 
#include "NumCpp/Core/Internal/Error.hpp"
#include "NumCpp/Core/Internal/StaticAsserts.hpp"
#include "NumCpp/Core/Internal/StlAlgorithms.hpp"
#include "NumCpp/NdArray.hpp"
 
namespace nc
{
    //============================================================================
    // Method Description:
    template<typename dtype>
    auto polar(dtype magnitude, dtype phaseAngle)
    {
        STATIC_ASSERT_ARITHMETIC(dtype);
 
        return std::polar(magnitude, phaseAngle);
    }
 
    //============================================================================
    // Method Description:
    template<typename dtype>
    auto polar(const NdArray<dtype>& magnitude, const NdArray<dtype>& phaseAngle)
    {
        if (magnitude.shape() != phaseAngle.shape())
        {
            THROW_INVALID_ARGUMENT_ERROR("Input magnitude and phaseAngle arrays must be the same shape");
        }
 
        NdArray<decltype(nc::polar(dtype{ 0 }, dtype{ 0 }))> returnArray(magnitude.shape());
        stl_algorithms::transform(magnitude.cbegin(),
                                  magnitude.cend(),
                                  phaseAngle.begin(),
                                  returnArray.begin(),
                                  [](dtype mag, dtype angle) -> auto { return nc::polar(mag, angle); });
 
        return returnArray;
    }
} // namespace nc