Subject: Re: [boost] [Review Request] Multiprecision Arithmetic Library
From: Christopher Kormanyos (e_float_at_[hidden])
Date: 2012-04-06 07:00:53
> mpf_float<0> is the only type we have that has variable precision at
> runtime, and the std lib routines that call these constants aren't supported
> in that use case (which should be documented somewhere - I'll check). And
> they're not supported largely because of the caching mechanism. You should
> get a compiler error if you try and use that type with those templates, but
> I'll double check that.
> PS Although it's possible to support variable runtime precision, it
> complicates things enough not to support it unless folks get really worked
> up about it ;-)
I categorically reject dynamic digit modification but do use precision control
in limited instances such as Newton iteration. But you're right. It's a can of worms.
Best regards, Chris.
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