On Jul 29, 2014 5:47 AM, "alawatthe" <[email protected]> wrote: > > Clear rules would also help in discussions like this one: > https://code.google.com/p/v8/issues/detail?id=3006 > > Background: > V8 implemented a new version of sin and cos, which is faster, but does not have the precision many user want. > One of the comments (#8) said about precision: > > - The ECMA script specification clearly states that Math.sin/cos are implementation-dependent approximations. There is no guarantees required regarding precision. > > I think, this feels a little bit odd, because where do we draw the line between performance and precision? > So, again clear rules (even if they are not as strict as in Java), would help a lot.
Yes. There are no requirements, but the spirit of the spec is clearly to be accurate or at least no worse than fdlibm. Carried to the extreme, this lack of requirements allows implementations to be conforming even if all functions returned 0 everywhere. Fortunately, no one does that. > > All the best > alex aka alawatthe > > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss >
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