[ublas] compilation error using prod()

From: Thomas Lemaire (thomas.lemaire_at_[hidden])
Date: 2005-09-06 01:02:01

Dear list,

I have a strange compilation problem with this line (sym_mat and mat are 
typedef) :

P -= prod<sym_mat>(prod<mat>(K,H_), P);

P is a sym_mat, K is a mat and H_ a mat_range... I have been using this for a 
while with boost cvs/gcc3.3 and it compiled well... 
My config has just changed and I am now using stable boost 1.33 and gcc4.

the compilation error concerns the inside prod<mat>(K,H_):

error: call of overloaded 'prod(jblas::mat&, const 
boost::numeric::ublas::matrix_range<jblas::mat>&)' is ambiguous

/usr/include/boost/numeric/ublas/matrix_expression.hpp:4636: note: candidates 
are: typename boost::numeric::ublas::matrix_matrix_binary_traits<typename 
E1::value_type, E1, typename E2::value_type, E2>::result_type 
boost::numeric::ublas::prod(const 
boost::numeric::ublas::matrix_expression<E>&, const 
boost::numeric::ublas::matrix_expression<E2>&) [with E1 = jblas::mat, E2 = 
boost::numeric::ublas::matrix_range<jblas::mat>]

/usr/include/boost/numeric/ublas/matrix_expression.hpp:4695: note:                 
M boost::numeric::ublas::prod(const 
boost::numeric::ublas::matrix_expression<E2>&, const 
boost::numeric::ublas::matrix_expression<E2>&) [with M = jblas::mat, E1 = 
boost::numeric::ublas::matrix<double, 
boost::numeric::ublas::basic_row_major<size_t, ptrdiff_t>, 
boost::numeric::ublas::unbounded_array<double, std::allocator<double> > >, E2 
= boost::numeric::ublas::matrix_range<jblas::mat>]

-- 
thomas