petsc-3.14.6 2021-03-30
SNESJacobianFunction
Function used to convey 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 on snes
Input Parameters
| x | - input vector, the Jacobian is to be computed at this value
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| ctx | - [optional] user-defined Jacobian context
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Output Parameters
| Amat | - the matrix that defines the (approximate) Jacobian
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| Pmat | - the matrix to be used in constructing the preconditioner, usually the same as Amat.
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See Also
SNESSetFunction(), SNESGetFunction(), SNESSetJacobian(), SNESGetJacobian()
Level
intermediate
Location
src/snes/interface/snes.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages