Re: [Boost-users] boost::mpl::abs missing

Subject: Re: [Boost-users] boost::mpl::abs missing
From: Murilo Adriano Vasconcelos (muriloufg_at_[hidden])
Date: 2011-04-09 20:58:18

2011/4/9 Dave Abrahams <dave_at_[hidden]>

> At Sat, 9 Apr 2011 20:54:48 -0300,
> Murilo Adriano Vasconcelos wrote:
> >
> > 2011/4/9 Peter Foelsche <foelsche_at_[hidden]>
> >
> > > There is no
> > >
> > > boost::mpl::abs
> > >
> > > Peter
> > >
> >
> >
> > There is a version of mpl::abs here:
> >
> https://svn.boost.org/svn/boost/sandbox/SOC/2010/bits_and_ints/boost/integer/static_abs.hppwhich
> > was done for a library I implemented last year.
> >
> > I want to ask for the MPL's maintainers to put it on the trunk.
>
> At Sat, 9 Apr 2011 16:36:03 -0700,
> Peter Foelsche wrote:
> >
> > It is a major annoyance that these arrithmetic operations return a
> > different type than the input!
> > I mean I input boost::mpl::long_ and I get a boost::mpl::integral_c
>
> I suggest that you open tickets at http://svn.boost.org/trac/boost.
> Maintenance of MPL is not very active, so I can't promise much, but if
> you don't open a ticket, your request will almost certainly be
> forgotten.
>
> Regards,
>
> --
> Dave Abrahams
> BoostPro Computing
> http://www.boostpro.com

Actually, that library have many (approximately 20) metafunctions that can
be added to MPL in the Bitwise Operations [0] section.

One short documentation for these metafunctions can be viewed here [1].

[0] -
http://www.boost.org/doc/libs/1_46_1/libs/mpl/doc/refmanual/bitwise-operations.htm
[1]  -
https://svn.boost.org/svn/boost/sandbox/SOC/2010/bits_and_ints/libs/integer/doc/html/boost_integer/bits_and_ints.html#boost_integer.bits_and_ints.overview

If there is interest in doing that (but not time from maintainers), I can
port these metafunctions to MPL library.

Regards
-- 
Murilo Adriano Vasconcelos
http://murilo.wordpress.com