[Boost-bugs] [Boost C++ Libraries] #8798: pow(cpp_dec_float_type(0), cpp_dec_float_type(n)) != 0 for n > 1

Subject: [Boost-bugs] [Boost C++ Libraries] #8798: pow(cpp_dec_float_type(0), cpp_dec_float_type(n)) != 0 for n > 1
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-07-08 12:45:17

#8798: pow(cpp_dec_float_type(0), cpp_dec_float_type(n)) != 0 for n > 1
-------------------------------------+----------------------------
 Reporter:  Jan Bouwer <JBouwer@…>   |      Owner:  johnmaddock
     Type:  Bugs                     |     Status:  new
Milestone:  To Be Determined         |  Component:  multiprecision
  Version:  Boost Development Trunk  |   Severity:  Problem
 Keywords:                           |
-------------------------------------+----------------------------
 The overload of 'pow' taking both arguments of number<cpp_dec_float<...>>
 gives a wrong answer when the base == 0 and the exponent > 1.

 eg.
 {{{
 using T = cpp_dec_float_50;
 assert( pow(T(0), T(2)) == 0 ); // Failure
 }}}

 Tested against svn #84980
 with clang (Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM
 3.2svn))
 target: x86_64-apple-darwin12.4.0
 with: -std=c++11 -stdlib=libc++

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8798>
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