On Apr 26, 2013 8:42 AM, "Tom Schuster" <[email protected]> wrote: > > Math.imul support was just added to the v8 trunk: > https://code.google.com/p/v8/source/detail?r=14450. > Is there any ongoing effort to standardize it? >
As with Firefox, which you actually implemented :) https://bugzilla.mozilla.org/show_bug.cgi?id=808148 There is no record of consensus (that I can locate) since this thread first began. I don't see why anyone object, but we should get it on record. Rick > On Fri, Nov 2, 2012 at 9:24 PM, Brendan Eich <[email protected]> wrote: > > David Herman wrote: > >> > >> On Nov 2, 2012, at 12:05 PM, Yehuda Katz<[email protected]> wrote: > >> > >>> Seems like a small surface-area with a large impact on compilers. > >>> > >>> At first glance, looks good to me. > >>> > >>> Curiosity: Does this overlap with Brendan's work on value objects (i.e. > >>> will it become moot in the face of them) > >> > >> > >> It could become unnecessary if you're working with value objects. If you > >> had ordinary numbers, you'd have to coerce them to u32 and then multiply: > >> > >> var a = 0x7fffffff, b = 0x7fefefef; // both doubles > >> var result = int32(a) * int32(b); // int32 > >> > >> But value objects are still uncertain > > > > > > I'm focusing on int64 and uint64 but making the framework as general under > > the hood as possible (e.g., the operators stuff, a multimethod variation > > that's inline-cacheable, based on an idea from Christian Plesner Hansen). > > > > The need for 64-bit ints is pretty strong in Node.js and I think this means > > value objects are a priority for ES7. > > > > > >> and at the very least much farther off into the future -- post-ES6. > >> Engines could implement and ship Math.imul in very short order. > > > > > > Agreed, and this kind of micro-evolution is important to support even while > > working on value objects for post-ES6. It may be we end up with int32 and > > uint32, but we don't need to if there's no strong use-case not satisfied by > > Math.imul. > > > > Note that there's no micro-evolutionary step involving Math.imul64 that > > satisfies the int64/uint64 use-cases Node faces (buffer and file > > sizes/offsets). You need 64-bit addition, subtraction, and probably other > > operators -- and you need the data type, not just operations that could be > > Math methods. > > > > /be > > > > _______________________________________________ > > es-discuss mailing list > > [email protected] > > https://mail.mozilla.org/listinfo/es-discuss > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss
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