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Date: Tue, 3 Feb 2015 14:15:11 +0000
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To: Andrea Faulds <ajf@ajf.me>
Cc: internals@lists.php.net
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Subject: Re: [PHP-DEV] Zero-fill right shift.
From: leight@gmail.com (Leigh)

On 3 February 2015 at 13:54, Andrea Faulds <ajf@ajf.me> wrote:
> Hi Leigh,
>
>> On 3 Feb 2015, at 13:51, Leigh <leight@gmail.com> wrote:
>> No idea. Personally I'm opposed to the bigints implementation because
>> of the implicit type auto-promotion.
>
> Huh? There=E2=80=99s no type promotion from a userland perspective, it=E2=
=80=99s entirely an implementation detail. Yes, some integers may be IS_LON=
G and others may be IS_BIGINT internally, but that=E2=80=99s only for Zend =
Engine 3 (might change in future), the boundary point varies by platform, a=
nd crucially, you can=E2=80=99t distinguish them from userland.

Aside from the breaks to some binary ops and once you hit the
promotion breakpoint working with that integer is a lot slower. Lets
not derail this thread into a discussion about why I dislike bigints.