petsc-3.13.6 2020-09-29

MatSeqAIJRegister

- Adds a new sub-matrix type for sequential AIJ matrices

#include "petscmat.h" 
PetscErrorCode  MatSeqAIJRegister(const char sname[],PetscErrorCode (*function)(Mat,MatType,MatReuse,Mat *))

Not Collective

	name	- name of a new user-defined matrix type, for example MATSEQAIJCRL
	function	- routine to convert to subtype

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

Then, your matrix can be chosen with the procedural interface at runtime via the option

    -mat_seqaij_type my_mat

advanced