SNESJacobianFn#

A prototype of a SNES Jacobian evaluation function that would be passed to SNESSetJacobian()

Synopsis#

PETSC_EXTERN_TYPEDEF typedef PetscErrorCode(SNESJacobianFn)(SNES snes, Vec u, Mat Amat, Mat Pmat, void *ctx);

Calling Sequence#

  • snes - the SNES context obtained from SNESCreate()

  • u - input vector

  • Amat - (approximate) Jacobian matrix

  • Pmat - matrix used to construct the preconditioner, often the same as Amat

  • ctx - [optional] user-defined context for matrix evaluation routine

See Also#

SNES: Nonlinear Solvers, SNES, SNESSetJacobian(), SNESGetJacobian(), SNESFunctionFn, SNESNGSFn

Level#

beginner

Location#

include/petscsnes.h

Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages