JDK 7u-dev review request 8024356: Double.parseDouble() is slow for long Strings

Brian Burkhalter brian.burkhalter at oracle.com
Thu Sep 12 18:32:55 UTC 2013


What should be put in for <link>?

Thanks,

Brian

On Sep 12, 2013, at 11:10 AM, Dmitry Nadezhin wrote:

> Aleksey, I like your wording of the comment. Thank you very much.
> 
> I would reformulate a little:
> <<<
> We can demonstrate (<link>) that decimal ulp should be less than 10^(-1075)
> to guarantee correctness
> ===
> We can demonstrate (<link>) that decimal ulp less than 10^(-1075) is enough
> to guarantee correctness.
>>> 
> because decimal ulp may be larger than 10^(-1075) for some inputs.
> For example, for decimal string
> "1.1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111"
> 
> binary half-ulp is 2^(-53)
> and decimal ulp 10^(-53) is enough .




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