id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4410	Sparse/Packed matrix assignment needs type conversion	Marco Guazzone <marco.guazzone@…>	David Bellot	"In file ''boost/detail/matrix_assign.hpp'' there are two possible source of type-conversion error interesting both ''sparse'' and ''packed'' matrices.

Let:

{{{#!c++
  typedef typename M::value_type value_type;
  typedef F<typename M::..., typename E::value_type> functor_type;

}}}

Then:

1. ''Comparison of an `E::value_type` with an `M::value_type`''
{{{#!c++
  if (v != value_type/*zero*/()) // where v is of type E::value_type
}}}

  E.g., `E::value_type` is `std::complex<float>` and `M::value_type` is `std::complex<double>`.

2. ''Assignment of an `M::value_type` to an `E::value_type`''
{{{#!c++
  functor_type::apply(*it, value_type/*zero*/());
}}}
  E.g., `E::value_type` is `float` and `M::value_type` is `std::complex<float>`.

"	Patches	closed	To Be Determined	uBLAS	Boost Development Trunk	Problem	worksforme