
Ublas : 
From: nisha kannookadan (nishak44_at_[hidden])
Date: 20080112 13:52:20
Hi Karl
Thanx so much, but this isnt the problem. I have all this in it, but it has some mistakes
in the email, it doesnt show it. I post it again and hope, it will appear, when I sent it.
Im obviously a newbie with this bindings, I downloaded LAPACK now and I guess I need
to link it, but I have no clue about this all. I dont even make to install LAPACK on my
mac, Im happy about any help.
Nisha
Code
#include \
#include \
#include \
#include \
namespace ublas = boost::numeric::ublas;
namespace lapack = boost::numeric::bindings::lapack;
int main() {
ublas::matrix\ A(3,3);
A(0,0) = 1;
A(0,1) = 1;
A(0,2) = 1;
A(1,0) = 2;
A(1,1) = 3;
A(1,2) = 1;
A(2,0) = 1;
A(2,1) = 1;
A(2,2) = 1;
std:: cout << A << std::endl;
ublas::matrix\ B(3,1);
B(0,0) = 4;
B(0,1) = 9;
B(0,2) = 2;
std::cout << B << std::endl;
lapack::gesv(A,B);
std::cout << B << std::endl;
}

> Date: Sat, 12 Jan 2008 19:03:14 +0100
> From: karl.meerbergen_at_[hidden]
> To: ublas_at_[hidden]
> Subject: Re: [ublas] Lapacksolve linear equations
>
> Dear Nisha,
>
> You should include the following files:
> boost/numeric/bindings/traits/ublas_matrix.hpp
> boostnumeric/bindings/lapack/gesv.hpp
>
> Also, make sure dense_matrix is column_major!
>
> Good luck,
>
> Karl
>
>
>
>
> nisha kannookadan wrote:
>> Hi all
>>
>> Im trying to use the bindings, but something is wrong, but the error feedback aint helpful.
>>
>> This is the code:
>>
>>
>> #include
>> #include
>> #include
>> #include
>> #include
>> #include
>>
>>
>> #include
>> #include
>>
>>
>> #define NDEBUG
>>
>> using namespace boost::numeric;
>>
>> int main() {
>>
>> ublas::matrix A(5,5);
>> ublas::matrix b(5,1);
>>
>> // Construct a simple matrix
>> for (int i=0; i<=j ? 5.0+ij : 0.0;
>>
>> std::cout << A << std::endl;
>>
>> for (int i=0; i<< b << std::endl;
>> }
>>
>> I believe, this should work, but the line: bindings::lapack::gesv(A,b); gives trouble, it says "Undefined symbols",
>> but I put its header in it.
>>
>> Thanks for any help
>>
>> Nisha K
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