https://svn.boost.org/trac10/ticket/11311 <pre class="wiki">../boost/multiprecision/cpp_int/divide.hpp: In function 'typename boost::enable_if_c&lt;((! boost::multiprecision::backends::is_trivial_cpp_int::value) &amp;&amp; (! boost::multiprecision::backends::is_trivial_cpp_int::value)), void&gt;::type boost::multiprecision::backends::eval_modulus(boost::multiprecision::backends::cpp_int_backend&lt;MinBits, MaxBits, SignType, Checked, Allocator&gt;&amp;, const boost::multiprecision::backends::cpp_int_backend&lt;MinBits2, MaxBits2, SignType2, Checked2, Allocator2&gt;&amp;, boost::multiprecision::signed_limb_type)': ../boost/multiprecision/cpp_int/divide.hpp:543: error: call of overloaded 'abs(boost::multiprecision::signed_limb_type&amp;)' is ambiguous /usr/qnx650/target/qnx6/usr/include/math.h:624: note: candidates are: double std::abs(double) /usr/qnx650/target/qnx6/usr/include/math.h:692: note: float std::abs(float) /usr/qnx650/target/qnx6/usr/include/math.h:1042: note: long double std::abs(long double) /usr/qnx650/target/qnx6/usr/include/stdlib.h:115: note: int std::abs(int) </pre> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/11311 Trac 1.4.3 John Maddock Sat, 16 May 2015 18:00:15 GMT https://svn.boost.org/trac10/ticket/11311#comment:1 https://svn.boost.org/trac10/ticket/11311#comment:1 <ul> <li><strong>status</strong> <span class="trac-field-old">new</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> → <span class="trac-field-new">fixed</span> </li> </ul> <p> I believe this should now be fixed in: <a class="ext-link" href="https://github.com/boostorg/multiprecision/commit/72c817e985091d34894c22cfcd492ba73c7e7fb9"><span class="icon">​</span>https://github.com/boostorg/multiprecision/commit/72c817e985091d34894c22cfcd492ba73c7e7fb9</a> </p> Ticket