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Subject: Re: [boost] [Review Request] Multiprecision Arithmetic Library
From: Christopher Kormanyos (e_float_at_[hidden])
Date: 2012-04-06 07:00:53

<snip> > 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. > John. Got it! > 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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