When NDEBUG is not defined I get various bounds checks and that is great (eg Check failed in file ./boost/numeric/ublas/matrix_sparse.hpp at line 347: !preserve etc). What I would like is for these checks to create an error before they terminate the program in this tool chain. Because at the moment eclipse/ mingw/ gdb won't catch them as errors in debugging, so essentially to track down the last call before the termination message by hand. I would really like to step into this though at the time of the failed check so I can look at the call stack..Honestly, I am not sure what side of the problem I should work this on: is there a #define that will help me, is there a tweak to eclipse/gdb that will help me. Any comment in this direction would be great.

As a PS (and a far lessor issue that I would not even post for), I have notice for mapped_matrix<double> creating transposes via iterators in the most naive and straightforward fashion beats the implementation of trans(m) where m is a mapped_matrix<double> by factors of 10. Does that sound right? It just seemed weird to me. IE this is much much much faster than trans for me:

void equal_transpose(SMatrix& m){

clear();

resize(m.size2(),m.size1());

smatrix_t::iterator1 i1 = m.begin1();

smatrix_t::iterator1 end1 = m.end1();

smatrix_t::iterator2 i2;

smatrix_t::iterator2 end2;

while(i1 != end1){

i2 = i1.begin();

end2 = i1.end();

while(i2 != end2){

//cout << i1.index1() << " " << i2.index2() << endl;

(*this)(i2.index2(),i1.index1()) = *i2;

i2++;

}

i1++;

}