[Boost-bugs] [Boost C++ Libraries] #13608: multiprecision/mpfi typo

Subject: [Boost-bugs] [Boost C++ Libraries] #13608: multiprecision/mpfi typo
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2018-06-17 10:30:34

#13608: multiprecision/mpfi typo
------------------------------------+----------------------------
 Reporter:  Michael Burr <burr2@…>  |      Owner:  John Maddock
     Type:  Bugs                    |     Status:  new
Milestone:  To Be Determined        |  Component:  multiprecision
  Version:  Boost 1.66.0            |   Severity:  Problem
 Keywords:  mpfi                    |
------------------------------------+----------------------------
 The version of boost that I'm using is through macports.  I believe that
 there is a typo in multiprecision/mpfi.hpp.  On line 478, digits2_2_10
 should be replaced by digits10_2_2.

 The original code is

 void precision(unsigned digits10) BOOST_NOEXCEPT
 {
     mpfi_set_prec(this->m_data,
 multiprecision::detail::digits2_2_10((digits10)));
 }

 The corrected code should be

 void precision(unsigned digits10) BOOST_NOEXCEPT
 {
     mpfi_set_prec(this->m_data,
 multiprecision::detail::digits10_2_2((digits10)));
 }

 This change means that with and without an argument, precision reverses
 the digits operation.  Moreover, this matches the corresponding lines in
 mpfr.hpp.

-- 
Ticket URL: <https://svn.boost.org/trac10/ticket/13608>
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