Re: [ViennaCL-support] student researcher - BATKOUM Marwane - Information request - ViennaFEM

[Karl R. <ru...@iu...>]

Hi,

please use the correct mailinglist vie...@so... for 
future mailings.

 > I am student researcher the National Institute of Health and Medical
> Research in France, I use your library ViennaFEM in my project, in order
> to solve the equation was derived in part via the finite element method.
> But I find some difficulties to solve a simple function to test the
> library: Equation poisson_equ_1 = viennamath :: make_equation
> (viennamath :: laplace (u) +1, -1);
> as soon as I added one in this equation, I get an error. could you help
> me please ?

The equation structure currently assumes that all terms depending on u 
are specified on the left hand side, while all other terms (not 
depending on u) are given as the second argument (right hand side). In 
your case, you want

Equation poisson_equ_1 =
   viennamath::make_equation(viennamath::laplace(u), -2);

Best regards,
Karli