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Date: Fri, 21 Jul 2023 13:04:55 -0700
Cc: Jorg Sowa <jorg.sowa@gmail.com>,
 PHP internals <internals@lists.php.net>
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 <CADyq6sLGTQWO1fAEq+88_738dLyS_gYNYiCckXJGZrek_sw1kA@mail.gmail.com>
To: Marco Pivetta <ocramius@gmail.com>
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Subject: Re: [PHP-DEV] Introducing 2 new modes to round function
From: dusk@woofle.net (Dusk)

On Jul 21, 2023, at 12:38, Marco Pivetta <ocramius@gmail.com> wrote:
> Hey Jorg,
>=20
> What is the reason for using this over these?
>=20
> * https://www.php.net/manual/en/function.ceil.php
> * https://www.php.net/manual/en/function.floor.php

floor() and ceil() don't have a $precision parameter.

What could be even more useful, however, would be to add modes which =
always round towards / away from zero. I suspect the commenter intending =
to use these modes in accounting would prefer these semantics over an =
implementation (like theirs) which always rounds to numerically higher / =
lower values.

It might also be appropriate to use more specific terminology for these =
modes, e.g. PHP_ROUND_FLOOR/_CEIL and PHP_ROUND_TO_ZERO/_AWAY_FROM_ZERO, =
rather than the ambiguous PHP_ROUND_DOWN.=