MatShellGetContext#

Returns the user-provided context associated with a MATSHELL shell matrix.

Synopsis#

#include "petscmat.h" 
PetscErrorCode MatShellGetContext(Mat mat, void *ctx)

Not Collective

Input Parameter#

Output Parameter#

  • ctx - the user provided context

Fortran Note#

To use this from Fortran you must write a Fortran interface definition for this function that tells Fortran the Fortran derived data type that you are passing in as the ctx argument.

See Also#

MATSHELL, MatCreateShell(), MatShellSetOperation(), MatShellSetContext()

Level#

advanced

Location#

src/mat/impls/shell/shell.c

Examples#

src/mat/tutorials/ex6f.F90.html
src/snes/tutorials/ex36.c.html
src/ts/tutorials/ex20opt_ic.c.html
src/ts/tutorials/ex50.c.html
src/tao/unconstrained/tutorials/eptorsion1.c.html
src/tao/bound/tutorials/plate2.c.html
src/tao/pde_constrained/tutorials/elliptic.c.html
src/tao/pde_constrained/tutorials/hyperbolic.c.html
src/tao/pde_constrained/tutorials/parabolic.c.html

Implementations#

MatShellGetContext_Shell in src/mat/impls/shell/shell.c


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