Comment #3 on issue 3738 by [email protected]: Inconsistent rounding in float parser
https://code.google.com/p/v8/issues/detail?id=3738

Attempting to figure out why some `toFixed(..)` results appeared to round and others didn't, I went about trying to implement the spec as faithfully as I could. This is what I ended up with:

https://gist.github.com/getify/652f1f58ca3a13bd29e4

Of course, I may be missing something, but I think it's faithful to the spirit of the spec. And notably, for `1.15`, it gives "1.2", not "1.1".

My test case btw was 859.385. I think the problem I am seeing is exactly the same as being discussed in this thread.

So, is the algorithm I presented, specifically the 10.a part where the `n` is selected, just untenable for engines to implement?

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