Function scalar2storage

imperative/python/src/tensor.cpp:183–194

template <typename T>
auto scalar2storage(T val, CompNode cn, DType dtype) {
    using max_ctype_t = DTypeScalar::max_ctype;
    DTypeScalar scalar(dtype);
    scalar.set_retain_dtype(val);
    HostTensorStorage storage(cn);
    auto* raw_ptr = reinterpret_cast<dt_byte*>(new max_ctype_t());
    std::shared_ptr<dt_byte> raw_storage = {
            raw_ptr, [](dt_byte* ptr) { delete reinterpret_cast<max_ctype_t*>(ptr); }};
    storage.only_reset_raw_storage(cn, dtype.size(), raw_storage, 0);
    std::memcpy(storage.ptr(), scalar.storage(), dtype.size());
    return HostStorage::make(std::move(storage));
}

template <typename ctype>
auto vec2storage(Span<DTypeScalar> vec, CompNode cn, DType dtype) {