Re: [boost] Name and Namespace forPotential BoostExtended Floating-Point

Subject: Re: [boost] Name and Namespace forPotential BoostExtended Floating-Point
From: Dave Abrahams (dave_at_[hidden])
Date: 2011-09-04 14:59:17

on Sun Sep 04 2011, Christopher Kormanyos <e_float-AT-yahoo.com> wrote:

> Christopher Kormanyos wrote:
>
>>> boost::multiprecision::mp_float will behave like a POD.
>
> Dave Abrahams wrote:
>
>> That would mean you could copy it with memcpy.  But that's not what you
>> intend to say, is it?
>
> No, just normal stuff such as instances of boost::multiprecision::mp_float
> constructed and copied from other PODs like a regular float, double or long double.

This has little to do with POD-ness, FWIW.  You should find some other
way to describe it (e.g. "they behave like the built-in numeric types").

> For example:
>
> boost::multiprecision::mp_float x = 4.4;
> boost::multiprecision::mp_float y = x / 3;
>
> std::cout << std::setprecision(std::numeric_limits<boost::multiprecision::mp_float>::digits10)
>                << std::scientific
>                << boost::multipreccision::sqrt(x / y)
>                << std::endl;
>
> ... and so on...
>
> But if you have a sequence of them, they can be copied with
> std::copy or set with std::fill, and the lot.
>
> Sincerely, Chris.
>
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-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com