petsc-3.4.5 2014-06-29

SNESJacobianFunction

function used to convey the nonlinear Jacobian of the function to be solved by SNES

Synopsis

#include "petscsnes.h"
$     SNESJacobianFunction(SNES snes,Vec x,Mat *Amat,Mat *Pmat,int *flag,void *ctx);
x - input vector
Amat - the matrix that defines the (approximate) Jacobian
Pmat - the matrix to be used in constructing the preconditioner, usually the same as Amat.
flag - flag indicating information about the preconditioner matrix structure (same as flag in KSPSetOperators()), one of SAME_NONZERO_PATTERN,DIFFERENT_NONZERO_PATTERN,SAME_PRECONDITIONER
ctx - [optional] user-defined Jacobian context

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