Re: [Boost-bugs] [Boost C++ Libraries] #11149: boost::multiprecision compilation fail with std::max

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #11149: boost::multiprecision compilation fail with std::max
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-03-29 20:37:53

#11149: boost::multiprecision compilation fail with std::max
-------------------------------+----------------------------
  Reporter:  minorlogic@…      |      Owner:  johnmaddock
      Type:  Bugs              |     Status:  closed
 Milestone:  To Be Determined  |  Component:  multiprecision
   Version:  Boost 1.57.0      |   Severity:  Showstopper
Resolution:  wontfix           |   Keywords:
-------------------------------+----------------------------

Comment (by chtz@…):

 Just some notes:
 First of all a crossreference to original issue:
 http://eigen.tuxfamily.org/bz/show_bug.cgi?id=982


 About overloading std::max:
 That is indeed (at least) bad style, however, you can very well implement
 a max/min function in your own namespace. Then the following would be
 possible (due to ADL):
 {{{
   using std::max;
   cpp_dec_float_50 x, y = max(x, 2*x);
 }}}

 Unfortunately, ADL does not work when writing (max) instead of max, which
 we originally did in Eigen (we replaced this by another mechanism
 meanwhile).

 I guess, we'll need to adapt our add <Scalar> arguments to our min/max-
 calls anyways, if we want to support ET-types.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11149#comment:2>
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