Boost LA

#include <boost/la/row_matrix.hpp> 
#include <boost/la/col_matrix.hpp> 
#include <boost/la/diag_matrix.hpp> 
#include <boost/la/trans_matrix.hpp> 
#include <boost/la/transpose.hpp> 
#include <boost/la/delr.hpp> 
#include <boost/la/delc.hpp> 
#include <boost/la/delrc.hpp> 
#include <boost/la/matrix_scalar_cast.hpp> 
#include <boost/la/mref.hpp>

namespace
boost
    {
    namespace
    la
        {
        //*** View proxies of matrix type ***
        
        -unspecified-return-type- row_matrix();        
        
        -unspecified-return-type- col_matrix();        
        
        -unspecified-return-type- diag_matrix();        
        
        -unspecified-return-type- trans_matrix();        
        
        -unspecified-return-type- transpose();        
        
        template <int R>
        -unspecified-return-type- delr();        
        
        template <int C>
        -unspecified-return-type- delc();        
        
        template <int R,int C>
        -unspecified-return-type- delrc();        
        
        //Only enabled if: is_matrix<A>::value
        template <class Scalar,class A>
        -unspecified-return_type- scalar_cast( A const & a );        
        
        //Only enabled if: is_matrix<A>::value
        template <class A>
        -unspecified-return-type- mref( A & a );
        }
    }