Re: [multiprecision] why 128 bit numbers isn't used in msvc?

Matt Borland via Boost-users <[email protected]> Thu, 29 Jun 2023 14:15:44 +0000
Newsgroups gmane.comp.lib.boost.user
Message-ID <OUpGYWATJ2Nmm9Z5zNBrCizObyHFvIZfWXk0mXNU9tDG88B1J6hinoGF_HD-P9sfb50KawGF6aIChbpfUswPcyoYqsfKf-ys6ztRBiEoxpE=@mattborland.com>
On Thu, Jun 29, 2023 at 15:09, shar yashuv Giat via Boost-users <[[email protected]](mailto:On Thu, Jun 29, 2023 at 15:09, shar yashuv Giat via Boost-users <<a href=)> wrote:

> msvc added 128 bit numbers(in the header __msvc_int128.hpp).
> I know multiprecision uses __128 to improve performance so why doesn't it use msvc version?
> it's seems easy to change and will probably improve performance.

As far as I know it’s not official supported. If you look through their open GitHub issues they are working on performance improvementsnow: https://github.com/microsoft/STL/issues/2520. Once it is official there is no compelling reason not to use it.

Matt

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