From: "Jₑₙₛ Gustedt" <jens.gustedt@inria.fr>
To: Rich Felker <dalias@libc.org>
Cc: musl@lists.openwall.com
Subject: Re: [musl] [C23 128 bit 4/4] C23: implement proper support for int128_t and uint128_t
Date: Wed, 31 May 2023 16:42:54 +0200 [thread overview]
Message-ID: <20230531164254.7a867552@inria.fr> (raw)
In-Reply-To: <20230531142743.GB4163@brightrain.aerifal.cx>
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Rich,
on Wed, 31 May 2023 10:27:44 -0400 you (Rich Felker <dalias@libc.org>)
wrote:
> (This was the whole reason _BitInt was added, no?)
No, not at all. These are added to have
- types for any width, not only multiples of 8
- potentially have types that have thousands of bits (clang seems to
be keen to do so)
- types that have different rules for conversions, in particular no promotion.
These are explicitly not allowed to be used for the [u]intXXX_t types.
They only appear in the patches I propose as a means to encode number
literals of the appropriate width. These are used with casts, such
that they end up with the correct types.
Thanks
Jₑₙₛ
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next prev parent reply other threads:[~2023-05-31 14:43 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-31 14:15 [musl] [C23 128 bit 0/4] implement the library part of 128 bit support Jens Gustedt
2023-05-31 14:15 ` [musl] [C23 128 bit 1/4] add an emulation for 128 bit arithmetic as needed for C library support Jens Gustedt
2023-05-31 14:15 ` [musl] [C23 128 bit 2/4] C23: implement w128 and wf128 support for printf Jens Gustedt
2023-05-31 14:15 ` [musl] [C23 128 bit 3/4] C23: implement w128 and wf128 for scanf and similar Jens Gustedt
2023-05-31 14:15 ` [musl] [C23 128 bit 4/4] C23: implement proper support for int128_t and uint128_t Jens Gustedt
2023-05-31 14:27 ` Rich Felker
2023-05-31 14:29 ` Rich Felker
2023-05-31 14:36 ` Jₑₙₛ Gustedt
2023-05-31 14:41 ` Rich Felker
2023-05-31 14:55 ` Jₑₙₛ Gustedt
2023-05-31 14:57 ` Rich Felker
2023-05-31 15:07 ` Jₑₙₛ Gustedt
2023-05-31 15:14 ` Rich Felker
2023-05-31 15:37 ` Jₑₙₛ Gustedt
2023-05-31 15:40 ` Rich Felker
2023-05-31 15:56 ` Jₑₙₛ Gustedt
2023-05-31 16:30 ` Alexander Monakov
2023-05-31 16:58 ` Jens Gustedt
2023-05-31 17:03 ` Rich Felker
2023-05-31 17:09 ` Alexander Monakov
2023-06-01 7:24 ` Jₑₙₛ Gustedt
2023-05-31 14:42 ` Jₑₙₛ Gustedt [this message]
2023-05-31 14:47 ` Rich Felker
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