From: Per Bothner <per@bothner.com>
To: Panicz Maciej Godek <godek.maciek@gmail.com>, kawa <kawa@sourceware.org>
Subject: Re: Comparison of numerical types
Date: Sun, 21 Jan 2024 13:14:01 -0800 [thread overview]
Message-ID: <30b9affb-a96f-4e1f-888e-25b384ef1251@bothner.com> (raw)
In-Reply-To: <CAMFYt2Y1A6D_fziA-tYYXGNdCk24AGx2PuDVfhyCC65vQie+Og@mail.gmail.com>
On 1/21/24 02:11, Panicz Maciej Godek via Kawa wrote:
> The equality and comparison predicates on gnu.math.UByte, gnu.math.UInt and
> gnu.math.ULong require that they are compared with objects of the same type.
no, that is not the case - or at least I don't think it should be
>
> This results in situations, where numbers with identical print
> representations are not equal (in the sense of both "equal?" and "=") to
> each other, and where the "less than" operator behaves counter-intuitively:
>> (define b0 (gnu.math.UByte:valueOf (as byte 241)))
>> (= b0 241)
> #f
>> (< b0 242)
> #f
>
> Is there any particular reason for such behavior?
Just a bug. Fixed now.
My guess is this was a copy-paste error - I copied code from the UShort
implementation into the UByte implementation, incorrectly.
--
--Per Bothner
per@bothner.com http://per.bothner.com/
prev parent reply other threads:[~2024-01-21 21:14 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-21 10:11 Panicz Maciej Godek
2024-01-21 21:14 ` Per Bothner [this message]
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