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Subject: Re: [boost] [Review Request] Multiprecision Arithmetic Library
From: John Maddock (boost.regex_at_[hidden])
Date: 2012-04-04 13:06:14

>> I'd like to ask for a formal review of the Multiprecision Arithmetic
>> Library, currently in the sandbox.
> When you do something like "get_constant_pi()", I see you
> are "warm-caching" the result from the first computation. Great.
> Just to double-check...
> I see the static bool flag, right? It's warm-cached, right? Yes. OK.
> Please confirm:

The constants are initialized prior to the start of main - so they're thread
safe as long as only one thread executes prior to main.

> Would you like to "seed" common constants such as pi, e, sqrt2, ln2, etc.
> with a known string representation of, say, a few hundred digits?
> Or is reading the string slower than computing the value?

Ah, good point, oversight on my part. I've just committed an update that
uses your 1100 digit values to initialize when possible.


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