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Date: Fri, 12 Jan 2024 00:52:18 +0000
To: tag Knife <fenniclog@gmail.com>
Cc: Jorg Sowa <jorg.sowa@gmail.com>, PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC][Discussion] Raising zero to the power of negative number
From: internals@gpb.moe ("Gina P. Banyard")


On Thursday, 11 January 2024 at 21:47, tag Knife <fenniclog@gmail.com> wrot=
e:
> On Thu, 11 Jan 2024 at 21:29, Jorg Sowa jorg.sowa@gmail.com wrote:
>=20
> > Hello everyone!
> >=20
> > I want to start the discussion on the RFC: Raising zero to the power of
> > negative number
> >=20
> > Link: https://wiki.php.net/rfc/raising_zero_to_power_of_negative_number
> >=20
> > Kind regards,
> > Jorg
>=20
>=20
> IEEE 754 dictates that an infinity should be the expected output for all
> these scenarios.

IEEE 754 only deals with floating point numbers, and even then if you want =
IEEE 754 behaviour for division you need to use fdiv() as of PHP 8.0 as any=
 division by 0 throws this error since https://wiki.php.net/rfc/engine_warn=
ings#division_by_zero got accepted.

I think this change makes sense but would rather have an improved wording/E=
rror as proposed by Ben.

Best regards,

Gina P. Banyard