Re: Zero-fill right shift.

On 3 Feb 2015, at 14:15, Leigh <leight@gmail.com> wrote: > > 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’s no type promotion from a userland perspective, it’s entirely an >> implementation detail. Yes, some integers may be IS_LONG and others may be IS_BIGINT internally, but >> that’s only for Zend Engine 3 (might change in future), the boundary point varies by platform, and >> crucially, you can’t distinguish them from userland. > > Aside from the breaks to some binary ops I don’t know where you got that idea. The binary ops are consistent - they aren’t constrained by register size like in previous PHP versions, but they’re still completely consistent. > and once you hit the > promotion breakpoint working with that integer is a lot slower. It’s slower, yes, but that hardly matters. If people care so much about performance, why use PHP? -- Andrea Faulds http://ajf.me/