
Ublas : 
From: Arun Tom Abraham (aruntom55_at_[hidden])
Date: 20080202 09:37:10
Hi all ,
I am a new user to ublas and bindings .. I am trying to solve a
equations of the form but have an error at the output ::
equation is of the form Ax = b ,, where A is 3 x 3 , x is 3 x 1 and
b is 3 x 1 ...
a snapshot of the program is :::
#include<boost/numeric/ublas/io.hpp>
#include<boost/numeric/bindings/traits/ublas_matrix.hpp>
#include<boost/numeric/bindings/lapack/gesv.hpp>
namespace ublas = boost::numeric::ublas;
int main()
{
ublas::matrix<float> A(3,3);
ublas::matrix<float> b(3,1);
/*
Code for entering A matrix & b matrix */
namespace lapack= boost::numeric::bindings::lapack;
lapack::gesv(A,b);
std::cout << b << std::endl;
return 0;
}
the linking with llapack was done properly ..
> the error came as
[[[[[ ** On entry to SGESV parameter number 7 had an illegal value ]]]]
on further search i found that this corresponds to leading dimension
of the matrix B .
http://elib.zib.de/netlib/lapack/explorehtml/sgesv.f.html
the message is from lapack
need help on this ... :)
Arun
compiler > g++ (GCC) 4.1.2 (Ubuntu 4.1.20ubuntu4) ...
boost version > latest from CVS ..