// compile against a CBLAS interface (ATLAS) (you can 
// also define this on the command line,
// in any case, do this before including bindings)
#define BOOST_NUMERIC_BINDINGS_BLAS_CBLAS

// step 1: bring in support for the container(s)
#include <boost/numeric/bindings/ublas/matrix.hpp>
#include <boost/numeric/bindings/ublas/vector.hpp>

// step 2: bring in support for the algorithms
#include <boost/numeric/bindings/blas/level1/nrm2.hpp>

namespace ublas = boost::numeric::ublas;
namespace blas = boost::numeric::bindings::blas;

int main() {
     ublas::vector<float> sv (8);
     std::cout << blas::nrm2 (sv) << std::endl;
}