id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
8692	setting mpfr precision uses wrong precision and trashes value	claude@…	John Maddock	"http://svn.boost.org/svn/boost/trunk/boost/multiprecision/mpfr.hpp
Two bugs in boost/multiprecision/mpfr.hpp:920-923

1. set_prec trashes the value, should use prec_round
2. precision is converted from bits to digits10, should be from digits10 to bits

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

should be more like

{{{
void precision(unsigned digits10) BOOST_NOEXCEPT
{
  mpfr_prec_round(this->m_data, multiprecision::detail::digits10_2_2((digits10)), GMP_RNDN);
}
}}}
"	Bugs	closed	To Be Determined	multiprecision	Boost Development Trunk	Problem	fixed