SNESJacobianFunction#

Function used by SNES to compute the nonlinear Jacobian of the function to be solved by SNES

Synopsis#

#include "petscsnes.h"
PetscErrorCode SNESJacobianFunction(SNES snes,Vec x,Mat Amat,Mat Pmat,void *ctx);

Collective

Input Parameters#

  • x - input vector, the Jacobian is to be computed at this value

  • ctx - [optional] user-defined Jacobian context

Output Parameters#

  • Amat - the matrix that defines the (approximate) Jacobian

  • Pmat - the matrix to be used in constructing the preconditioner, usually the same as Amat.

See Also#

SNES, SNESSetFunction(), SNESGetFunction(), SNESSetJacobian(), SNESGetJacobian()

Level#

intermediate

Location#

src/snes/interface/snes.c


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Index of all SNES routines
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