I don't know who (if anyone?) is maintaining ublas at present, but test4 and test5 are failing *on every single compiler* at present. I've partly traced the problem: an exception is being thrown in banded.hpp line 192, in : boost::numeric::ublas::banded_matrix<double,boost::numeric::ublas::basic_row_major<unsigned int,int>,boost::numeric::ublas::unbounded_array<double,std::allocator<double>
::operator()(unsigned int i=0x00000000, unsigned int j=0x00000001) Line 192 + 0x34 C++
The cause is that the member data member _upper has been initialised to zero, which means any attempt here to access members of the matrix results in an exception being thrown! At present I'm stumped, I haven't been able to figure out what the code is supposed to do well enough to even begin to suggest a fix, so I'm just hoping this will ring a bell with someone, who'll know what to do :-) Regards, John.