[Boost-users] Problem with "prod" function

Subject: [Boost-users] Problem with "prod" function
From: gicatena_at_[hidden]
Date: 2010-05-16 06:01:16

The following code is not working for me:

---------------------------------------
using namespace boost::numeric::ublas;
        matrix<double> m (3, 3);
        matrix<double> o (3, 3);
        for (unsigned i = 0; i < m.size1 (); ++ i)
                for (unsigned j = 0; j < m.size2 (); ++ j)
                {
                        m (i, j) = 3 * i + j;
                        o (i, j) = 3 * i + j;
                }
        std::cout << m << o << std::endl;
        
        matrix_vector_binary2< matrix_row< matrix<double> >, matrix<double>, double > 
D;

        D = prod(row(m, 1),o);
---------------------------------------

the error is

1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3809) : error 
C2825: 'F': must be a class or namespace when followed by '::'
1>        c:\users\alex\desktop\testngage\testngage\testngage.cpp(21) : see 
reference to class template instantiation 'boost::numeric::ublas::
matrix_vector_binary2<E1,E2,F>' being compiled
1>        with
1>        [
1>            E1=boost::numeric::ublas::matrix_row<boost::numeric::ublas::
matrix<double>>,
1>            E2=boost::numeric::ublas::matrix<double>,
1>            F=double
1>        ]
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3809) : error 
C2039: 'result_type' : is not a member of '`global namespace''
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3809) : error 
C2146: syntax error : missing ';' before identifier 'value_type'
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3809) : error 
C4430: missing type specifier - int assumed. Note: C++ does not support default-
int
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3810) : error 
C2146: syntax error : missing ';' before identifier 'const_reference'
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3810) : error 
C4430: missing type specifier - int assumed. Note: C++ does not support default-
int
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3810) : error 
C4430: missing type specifier - int assumed. Note: C++ does not support default-
int
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3811) : error 
C2146: syntax error : missing ';' before identifier 'reference'
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3811) : error 
C4430: missing type specifier - int assumed. Note: C++ does not support default-
int
1>c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(3811) : error 
C4430: missing type specifier - int assumed. Note: C++ does not support default-
int
1>c:\users\alex\desktop\testngage\testngage\testngage.cpp(21) : error C2512: 
'boost::numeric::ublas::matrix_vector_binary2<E1,E2,F>' : no appropriate 
default constructor available
1>        with
1>        [
1>            E1=boost::numeric::ublas::matrix_row<boost::numeric::ublas::
matrix<double>>,
1>            E2=boost::numeric::ublas::matrix<double>,
1>            F=double
1>        ]
1>c:\users\alex\desktop\testngage\testngage\testngage.cpp(23) : error C2679: 
binary '=' : no operator found which takes a right-hand operand of type 'boost::
numeric::ublas::matrix_vector_binary2<E1,E2,F>' (or there is no acceptable 
conversion)
1>        with
1>        [
1>            E1=boost::numeric::ublas::matrix_row<boost::numeric::ublas::
matrix<double>>,
1>            E2=boost::numeric::ublas::matrix<double>,
1>            F=boost::numeric::ublas::matrix_vector_prod2<boost::numeric::
ublas::matrix_row<boost::numeric::ublas::matrix<double>>,boost::numeric::ublas::
matrix<double>,double>
1>        ]
1>        c:\program files (x86)
\boost\boost_1_42\boost\numeric\ublas\matrix_expression.hpp(4075): could be 
'boost::numeric::ublas::matrix_vector_binary2<E1,E2,F> &boost::numeric::ublas::
matrix_vector_binary2<E1,E2,F>::operator =(const boost::numeric::ublas::
matrix_vector_binary2<E1,E2,F> &)'
1>        with
1>        [
1>            E1=boost::numeric::ublas::matrix_row<boost::numeric::ublas::
matrix<double>>,
1>            E2=boost::numeric::ublas::matrix<double>,
1>            F=double
1>        ]
1>        while trying to match the argument list '(boost::numeric::ublas::
matrix_vector_binary2<E1,E2,F>, boost::numeric::ublas::matrix_vector_binary2<E1,
E2,F>)'
1>        with
1>        [
1>            E1=boost::numeric::ublas::matrix_row<boost::numeric::ublas::
matrix<double>>,
1>            E2=boost::numeric::ublas::matrix<double>,
1>            F=double
1>        ]
1>        and
1>        [
1>            E1=boost::numeric::ublas::matrix_row<boost::numeric::ublas::
matrix<double>>,
1>            E2=boost::numeric::ublas::matrix<double>,
1>            F=boost::numeric::ublas::matrix_vector_prod2<boost::numeric::
ublas::matrix_row<boost::numeric::ublas::matrix<double>>,boost::numeric::ublas::
matrix<double>,double>
1>        ]

where am I getting wrong?