Re: [Help-gsl] more than one submatrix of the same matrix?

[Eduardo Zacarías B.]

Hi!

Yep, luckily I had come to the same conclusion, about the view in the 
satck being overwritten. However, the code compiles and runs. I hope 
that the compiler would have stopped me!

Anyway, making separate view objects and taking the pointer from them 
solves the problem.

Thank you very much!

Best regards

Eduardo


Brian Gough wrote:
> "Eduardo Zacarías B." writes:
>  > gsl_matrix *secondRow = &gsl_matrix_submatrix(mat,1,0,1,mat->size2).matrix;
>
> Hello,
>
> Making a pointer to the return value of a function is not allowed in
> C.  The return value is on the stack and will be overwritten.
>
> You need to copy the return value (see the LU example in the Linear
> Algebra chapter of the manual (2nd ed, p187)).
>
> regards