[petsc-users] Question about Matrix Free

[Jed Brown]

On Sun, Jun 24, 2012 at 3:41 PM, Matthew Knepley <knepley at gmail.com> wrote:

> On Sun, Jun 24, 2012 at 1:34 PM, behzad baghapour <
> behzad.baghapour at gmail.com> wrote:
>
>> Would you please explain more ? Did you mean the void type of the
>> matrix-vector kernel ?
>>
>
> The return type MUST be PetscErrorCode


Also, if you are going to use a C++ class method, you MUST declare it
static.


Finally, always include the whole error message. The stack trace is a very
important part, bet please always paste the whole thing into the email. It
is false economy to not include the whole thing.
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