[petsc-users] SNESFunction undefined reference

[Xiangdong]

I thought it has the same functionality as SNESComputeFunction, but can
take one more argument ctx.

>From the manual pages, SNESFunction and SNESComputeFunction are very
similar:

http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/SNES/SNESFunction.html
http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/SNES/SNESComputeFunction.html

Thanks.

Xiangdong



On Wed, Apr 9, 2014 at 2:15 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>   SNESFunction is not a function. What do you think it is suppose to
> compute? You provide a function for evaluating the nonlinear function with
> SNESSetFunction().
>
>    Barry
>
> On Apr 9, 2014, at 11:37 AM, Xiangdong <epscodes at gmail.com> wrote:
>
> >
> >
> >
> > On Wed, Apr 9, 2014 at 11:40 AM, Matthew Knepley <knepley at gmail.com>
> wrote:
> > On Wed, Apr 9, 2014 at 10:38 AM, Xiangdong <epscodes at gmail.com> wrote:
> > Hello everyone,
> >
> > When add this line to src/ex3.c
> >
> > SNESFunction(snes,x,fval,&ctx);
> >
> > The compiler complains that undefined reference to `SNESFunction'.
> >
> > However, all other snes function calls in ex3 work well. Why is it
> special for SNESFunction?
> >
> > Any suggestions to fix this problem?
> >
> > Do you want SNESComputeFunction() ?
> >
> > Yes, SNESComputeFunction() works.
> >
> > It seems that SNESFunction() can takes one more input argument ctx. Is
> this function disabled in current release or just a bug in the header file?
> >
> > Thanks.
> >
> > Xiangdong
> >
> >
> >
> >    Matt
> >
> > Thank you.
> >
> > Xiangdong
> >
> >
> >
> > --
> > What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> > -- Norbert Wiener
> >
>
>
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