Function select

tests/validation/reference/Select.cpp:39–78

{
template <typename T>
SimpleTensor<T> select(const SimpleTensor<uint8_t> &c, const SimpleTensor<T> &x, const SimpleTensor<T> &y)
{
    // Check if condition has the same rank as c
    const bool is_same_rank = (c.shape().num_dimensions() == x.shape().num_dimensions());

    // Check shapes
    ARM_COMPUTE_ERROR_ON(x.shape() != y.shape());
    ARM_COMPUTE_ERROR_ON(is_same_rank && (x.shape() != c.shape()));
    ARM_COMPUTE_ERROR_ON(!is_same_rank && (c.shape().num_dimensions() > 1) &&
                         (c.shape().x() != x.shape()[x.shape().num_dimensions() - 1]));

    // Create reference
    SimpleTensor<T> dst{x.shape(), x.data_type(), 1};

    // Run select core
    if (is_same_rank)
    {
        for (int i = 0; i < x.num_elements(); ++i)
        {
            dst[i] = c[i] > 0 ? x[i] : y[i];
        }
    }
    else
    {
        T *output_ptr = dst.data();

        const int outer_size = c.num_elements();
        const int inner_size = x.num_elements() / outer_size;
        size_t    offset     = 0;

        for (int i = 0; i < outer_size; ++i)
        {
            const T *input_ptr = c[i] > 0 ? x.data() : y.data();
            memcpy(output_ptr + offset, input_ptr + offset, inner_size * sizeof(T));
            offset += inner_size;
        }
    }

    return dst;
}

template SimpleTensor<uint8_t>
select(const SimpleTensor<uint8_t> &c, const SimpleTensor<uint8_t> &x, const SimpleTensor<uint8_t> &y);