Re: [boost] [modularization] How to remove the Math -> multuplecission dependency?

Subject: Re: [boost] [modularization] How to remove the Math -> multuplecission dependency?
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2014-06-06 13:32:35

Le 06/06/14 09:55, John Maddock a écrit :
>> John, ther is a cycle between multuprecision and Math.
>
> I know.
>
>> how can this dependency be removed?
>>
>>
>>     /math ->multiprecision/
>> <http://www.pdimov.com/tmp/report-6d1f271/multiprecision.html>
>>
>>
>>       |<boost/multiprecision/cpp_dec_float.hpp>|
>>
>>   * from |<boost/math/constants/generate.hpp>|
>
> I would argue it's a "false positive": the header generate.hpp is a 
> maintenance header used for generating new numeric constants, and the 
> dependency to multiprecision is optional (inside #ifdef's).  It is 
> however documented, so I'm loathed to just move it.  There are quite a 
> few of Math's dependencies that are introduced via similar headers 
> that exist for maintenance/testing/optional use, and are not included 
> by any of the "include everything" entry point headers.
>
>
I don't mind for the other optional dependencies. The issue with this 
one is that it introduce a cycle. It would be great if this cycle can be 
broken but of course, there is nothing in Boost rules that force us to 
don't have cycles :)

Vicente