petsc-3.13.6 2020-09-29

PCRegister

Adds a method to the preconditioner package.

#include "petscksp.h" 
PetscErrorCode  PCRegister(const char sname[],PetscErrorCode (*function)(PC))

Not collective

	name_solver	- name of a new user-defined solver
	routine_create	- routine to create method context

PCRegister() may be called multiple times to add several user-defined preconditioners.

   PCRegister("my_solver", MySolverCreate);

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

    PCSetType(pc,"my_solver")

or at runtime via the option

    -pc_type my_solver

advanced