inner.hpp

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#pragma once
 
#include <algorithm>
 
#include "NumCpp/Core/Internal/Error.hpp"
#include "NumCpp/Core/Internal/StaticAsserts.hpp"
#include "NumCpp/NdArray.hpp"
 
namespace nc
{
    //============================================================================
    // Method Description:
    template<typename dtype>
    dtype inner(const NdArray<dtype>& a, const NdArray<dtype>& b)
    {
        STATIC_ASSERT_ARITHMETIC_OR_COMPLEX(dtype);
 
        if (a.size() != b.size())
        {
            THROW_INVALID_ARGUMENT_ERROR("Inputs 'a' and 'b' must have the same size");
        }
 
        return std::inner_product(a.cbegin(), a.cend(), b.cbegin(), dtype{ 0 });
    }
} // namespace nc