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Subject: [Boostusers] Trouble with vector and matrix multiplication
From: Philip Goh (philip_at_[hidden])
Date: 20081103 14:44:43
Hi,
I'm trying to multiply a vector by a matrix. Pretty simple, but I'm running
into problems as the compiler is complaining about the overloaded operator *
Here's some code that produces the error.

#include <boost/numeric/ublas/matrix.hpp>
#include <boost/numeric/ublas/io.hpp>
#include <boost/numeric/ublas/vector.hpp>
typedef boost::numeric::ublas::matrix<double> boost_matrix;
typedef boost::numeric::ublas::vector<double> boost_vector;
int _tmain(int argc, _TCHAR* argv[])
{
boost_matrix mat(5,5);
boost_vector v1(5), v2(5);
v1 = v2 * mat;
return 0;
}

The error message I'm getting is : "Error 1 error C2666:
'boost::numeric::ublas::operator *' : 2 overloads have similar conversions
boost_matrix_multiplication.cpp 18"
I'm using Visual Studio 2008 Express and boost 1.36.
This looks like a very simple problem, and any help would be greatly
appreciated.
Phil
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