See SNESSetFunctionDomainError()

"WANG, LEI" <[email protected]> writes:

> Dear all
>
> I am writing a code for nonlinear mechanical problem with SNES. The code 
> often stops inside of the iterations when computing the Jacobian or Function. 
> I would like to force the code exit once some abnormal value appears, but do 
> not know what function to use? I have tried to set the residual norm to a 
> large value, iteration number to a large value, but seems those not work. 
> What should I write in 'if(abnormal) ???' for exiting SNES iteration in the 
> functions FormJacobian or FormFunction?
>
> Cheers
> Lei

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