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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.lang.c
Subject: Re: "A diagram of C23 basic types"
Date: Thu, 3 Apr 2025 20:35:58 -0000 (UTC)
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On Thu, 3 Apr 2025 01:20:48 -0500, BGB wrote:

> So, extended features:
>    _UBitInt(5)   cr, cg, cb;
>    _UBitInt(16)  clr;
>    clr = (_UBitInt(16)) { 0b0u1, cr, cg, cb };
> Composes an RGB555 value.
> 
>    cg = clr[9:5]; //extract bits
>    clr[9:5] = cg;  //assign bits
>    clr[15:10] = clr[9:5];  //copy bits from one place to another.
> 
> And:
>    (_UBitInt(16)) { 0b0u1, cr, cg, cb } = clr;
> 
> Decomposing it into components, any fixed-width constants being treated 
> as placeholders.

Next step: what if they’re variable-width bitfields, not fixed-width?