id summary reporter owner description type status milestone component version severity resolution keywords cc 10750 bad interaction between ublas, float128 and std::complex vbeffara@… Gunter "The following code fails to compile: {{{ #include #include using boost::multiprecision::float128; int main () { boost::numeric::ublas::matrix > A(1,1); lu_factorize(A); } }}} (on OSX 10.10 using g++-4.9 -fext-numeric-literals -lquadmath), I am getting a huge complaint about missing `operator<` at `numeric/ublas/detail/matrix_assign.hpp:33:35`. Things work perfectly with a matrix of float128, or a matrix of std::complex. And other operations work with std::complex. Is std::complex supposed to work?" Bugs new To Be Determined uBLAS Boost 1.57.0 Problem