Re: [Boost-users] [boost.multiprecision] export_bits throws on a negative number

Subject: Re: [Boost-users] [boost.multiprecision] export_bits throws on a negative number
From: John Maddock (jz.maddock_at_[hidden])
Date: 2016-04-28 12:59:40

On 28/04/2016 16:40, Tassilo Glander wrote:
> Hi John,
>
> thanks for stepping in. I would expect that the export just exports the memory representation of the number - maybe with flipped order via msv_first parameter. Especially, something exported via export_bits and  than imported via import_bits should be the same, at least on the same platform.
Will fix.
>
> That said, I actually was just looking for a way to implement a hash function and thought it was straightforward to use chunks of char. But I could also compute the hash on the str() output.

You could use str() but it's a rather inefficient way to go, I should 
probably add specializations for boost::hash and std::hash.

John.