# PetscViewerRegisterDynamic

Adds a method to the Krylov subspace solver package.

### Synopsis

    PetscErrorCode PetscViewerRegisterDynamic(char *name_solver,char *path,char *name_create,PetscErrorCode (*routine_create)(PetscViewer))

Not Collective

### Input Parameters

| name_solver | - name of a new user-defined solver
| path | - path (either absolute or relative) the library containing this solver
| name_create | - name of routine to create method context
| routine_create | - routine to create method context

### Notes

PetscViewerRegisterDynamic() may be called multiple times to add several user-defined solvers.

If dynamic libraries are used, then the fourth input argument (routine_create) is ignored.

### Sample usage

       PetscViewerRegisterDynamic("my_viewer_type",/home/username/my_lib/lib/libO/solaris/mylib.a,
                   "MyViewerCreate",MyViewerCreate);

Then, your solver can be chosen with the procedural interface via

        PetscViewerSetType(ksp,"my_viewer_type")

or at runtime via the option

        -viewer_type my_viewer_type

### See Also

PetscViewerRegisterAll(), PetscViewerRegisterDestroy()

Level:developer
Location:src/sys/src/viewer/../../../../include/petscviewer.h
Index of all Viewer routines
Table of Contents for all manual pages
Index of all manual pages