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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.arch
Subject: Re: is Vax addressing sane today
Date: Tue, 1 Oct 2024 00:33:01 -0000 (UTC)
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On Mon, 30 Sep 2024 11:15:05 +0300, Michael S wrote:

> On Mon, 30 Sep 2024 01:28:42 -0000 (UTC)
> Lawrence D'Oliveiro <ldo@nz.invalid> wrote:
> 
>> Also the fact that those “64-bit” APIs are not entirely “64-bit” ...
> 
> They are entirely 64-bit.

<https://arstechnica.com/gadgets/2018/05/microsoft-learn-from-apple-ii/2/>:

    Another example; Win32 has a function for getting the size of a
    file. File sizes on Windows are limited to 2^64 bytes, and so they
    need a 64-bit integer to be expressed easily. But the API call to
    get the size of a file doesn't give you a 64-bit value. Instead,
    it gives you a pair of 32-bit values that have to be combined in a
    particular way. For 32-bit Windows, that's sort of understandable;
    32-bit Windows is, well, 32-bit, so you might not expect to be
    able to use 64-bit integers. But if you use the same API in 64-bit
    Windows, it still gives you the pair of numbers, rather than just
    a nice simple 64-bit number. While this made some kind of sense on
    32-bit Windows, it makes no sense at all on 64-bit Windows, since
    64-bit Windows can, by definition, use 64-bit numbers.