No, _BitInt is a different philosophy of dealing with numbers. _BitInt is not multi-precision, it's fix precision but with support for widths larger than the CPU word size.

And the compiler would not be able to optimize code the way multi-precision does because of limitations on what the compiler can reason about.

From: Std-Proposals <std-proposals-bounces@lists.isocpp.org> on behalf of Thiago Macieira via Std-Proposals <std-proposals@lists.isocpp.org>
Sent: Friday, August 8, 2025 6:29:25 PM
To: std-proposals@lists.isocpp.org <std-proposals@lists.isocpp.org>
Cc: Thiago Macieira <thiago@macieira.org>
Subject: Re: [std-proposals] Multiprecision division

On Friday, 8 August 2025 09:13:42 Pacific Daylight Time Hans Åberg via Std-
Proposals wrote:
> C++ does not have multiprecision support, and the hard part is implementing
> division

Wouldn't we get it for free when we get _BitInt support?

--
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Principal Engineer - Intel Platform & System Engineering



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