Class gen_seq_t

tests/casts.cpp:169–180

};

template <class V, class To> struct gen_seq_t {
    using From = typename V::value_type;
    const size_t N = cvt_input_data<From, To>.size();
    size_t offset = 0;
    void operator++() { offset += V::size(); }
    explicit operator bool() const { return offset < N; }
    From operator()(size_t i) const
    {
        i += offset;
        return i < N ? cvt_input_data<From, To>[i] : From(i);
    }
};

template <class To> struct foo {
    template <class T> auto operator()(const T &v) -> decltype(simd_cast<To>(v));