操作员与整数模板参数专业化过载

我的向量类定义如下：

template <unsigned int SIZE>
class Vector : public Stringable
{
    private:
        float mData [SIZE];
    public:
        Vector ();
        ...
};

我还声明了此（数学）向量的某些操作员（在向量类外）：

template <unsigned int SIZE>
Vector<SIZE> operator+ (const Vector<SIZE>& vec, float c);
template<>
Vector<3> operator+ (const Vector<3>& vec, float c);
template<>
Vector<4> operator+ (const Vector<4>& vec, float c);
template <unsigned int SIZE>
Vector<SIZE> operator+ (const Vector<SIZE>& vec1, const Vector<SIZE>& vec2);
template <>
Vector<3> operator+ (const Vector<3>& vec1, const Vector<3>& vec2);
template <>
Vector<4> operator+ (const Vector<4>& vec1, const Vector<4>& vec2);

这就是它们的实现方式：

template <unsigned int SIZE>
Vector<SIZE> operator+(const Vector<SIZE>& vec1, const Vector<SIZE>& vec2)
{
    Vector<SIZE> result = Vector<SIZE>(vec1);
    int i = 0;
    for (i = 0; (i + 4) < SIZE; i += 4)
    {
        __m128 lhs = _mm_set_ps(vec1[i], vec1[i+1], vec1[i+2], vec1[i+3]);
        __m128 rhs = _mm_set_ps(vec2[i], vec2[i+1], vec2[i+2], vec2[i+3]);
        _mm_add_ps(lhs, rhs);
        _mm_store_ps(result.getRawData(), lhs);
    }
    for (; i < SIZE; i++)
    {
        result[i] = vec1[i] - vec2[i];
    }
    return result;
}
template<>
Vector<3> operator+<3>(const Vector<3>& vec1, const Vector<3>& vec2)
{
    Vector<3> result = Vector<3>(vec1);
    float tmpBuffer [4];
    __m128 lhs = _mm_set_ps(vec1[0], vec1[1], vec1[2], 0);
    __m128 rhs = _mm_set_ps(vec2[0], vec2[1], vec2[2], 0);
    _mm_add_ps(lhs, rhs);
    _mm_store_ps(tmpBuffer, lhs);
    mempcpy(result.getRawData(), tmpBuffer, 3 * sizeof(float));
    return result;
}
template<>
Vector<4> operator+<4>(const Vector<4>& vec1, const Vector<4>& vec2)
{
    Vector<4> result = Vector<4>(vec1);
    __m128 lhs = _mm_set_ps(vec1[0], vec1[1], vec1[2], vec1[3]);
    __m128 rhs = _mm_set_ps(vec2[0], vec2[1], vec2[2], vec1[3]);
    _mm_add_ps(lhs, rhs);
    _mm_store_ps(result.getRawData(), lhs);
    return result;
}
template <unsigned int SIZE>
Vector<SIZE> operator+(const Vector<SIZE>& vec, float c)
{
    Vector<SIZE> result = Vector<SIZE>(vec);
    int i = 0;
    for (i = 0; (i + 4) < SIZE; i += 4)
    {
        __m128 lhs = _mm_set_ps(vec[i], vec[i+1], vec[i+2], vec[i+3]);
        __m128 rhs = _mm_set1_ps(c);
        _mm_add_ps(lhs, rhs);
        _mm_store_ps(result.getRawData(), lhs);
    }
    for (; i < SIZE; i++)
    {
        result[i] = vec[i] + c;
    }
    return result;
}
template <>
Vector<3> operator+<3>(const Vector<3>& vec, float c)
{
    Vector<3> result = Vector<3>(vec);
    float tmpBuffer [4];
    __m128 lhs = _mm_set_ps(vec[0], vec[1], vec[2], 0);
    __m128 rhs = _mm_set1_ps(c);
    _mm_add_ps(lhs, rhs);
    _mm_store_ps(tmpBuffer, lhs);
    mempcpy(result.getRawData(), tmpBuffer, 3 * sizeof(float));
    return result;
}
template <>
Vector<4> operator+<4>(const Vector<4>& vec, float c)
{
    Vector<4> result = Vector<4>(vec);
    __m128 lhs = _mm_set_ps(vec[0], vec[1], vec[2], 0);
    __m128 rhs = _mm_set1_ps(c);
    _mm_add_ps(lhs, rhs);
    _mm_store_ps(result.getRawData(), lhs);
    return result;
}

以上所有代码都在一个文件中：" vector.cpp"

我目前正在使用Intel的SSE Interinss从"正常"向量操作转移到SIMD操作。

由于尺寸为3＆amp;4在我的应用程序中很常见，我想为这些操作员专业地使用这些模板操作员，以便更好地使用XMM寄存器。（如您所见，SIMD循环不会用于任何大小＆lt; 4的向量）。

不幸的是，我对如何实现这一目标感到不知所措，我真的不知道我需要什么声明/定义，模板参数需要什么，...

编辑：现在，我会收到"多个定义"链接器错误，我正在使用clang 5.0

大约有50个错误（很多，50个只是一个猜测），所有专业似乎都存在...

CMakeFiles/Space.elf.dir/src/Entities/Entity.cpp.o: In function `Maths::Vector<3u> Maths::operator+<3u>(Maths::Vector<3u> const&, float)':
/home/.../CLionProjects/Space/src/Maths/Vector.cpp:427: multiple definition of `Maths::Vector<3u> Maths::operator+<3u>(Maths::Vector<3u> const&, float)'
CMakeFiles/Space.elf.dir/src/main.cpp.o:/home/.../CLionProjects/Space/src/Maths/Vector.cpp:427: first defined here
CMakeFiles/Space.elf.dir/src/Entities/Entity.cpp.o: In function `Maths::Vector<4u> Maths::operator+<4u>(Maths::Vector<4u> const&, Maths::Vector<4u> const&)':
/home/.../CLionProjects/Space/src/Maths/Vector.cpp:392: multiple definition of `Maths::Vector<4u> Maths::operator+<4u>(Maths::Vector<4u> const&, Maths::Vector<4u> const&)'
CMakeFiles/Space.elf.dir/src/main.cpp.o:/home/.../CLionProjects/Space/src/Maths/Vector.cpp:392: first defined here
/home/.../CLionProjects/Space/src/Maths/Vector.cpp:377: multiple definition of `Maths::Vector<3u> Maths::operator+<3u>(Maths::Vector<3u> const&, Maths::Vector<3u> const&)'
CMakeFiles/Space.elf.dir/src/main.cpp.o:/home/.../CLionProjects/Space/src/Maths/Vector.cpp:377: first defined here
CMakeFiles/Space.elf.dir/src/Entities/EntityManager.cpp.o: In function `Maths::Vector<3u> Maths::operator+<3u>(Maths::Vector<3u> const&, float)':

我已经审查了一部分路径，但是您得到了这个想法