Petsc
Date: 2013-07-02

    classdef
       petsc-3.4.2 2013-07-02 Petsc < handle
    %
    %     PETSc MATLAB Interface Help
    %
    %   PetscInitialize({'-option1','value1','-option2'});
    %   PetscFinalize;
    %
    %   Petsc.INSERT_VALUES, Petsc.ADD_VALUES  --- Options for setting values into Vecs and Mats
    %   Petsc.DECIDE,Petsc.DEFAULT,Petsc.DETERMINE --- Use instead of some integer arguments
    %
    %   PetscOptionsView;  % show current options
    %   PetscOptionsSetValue('-optionname','value');
    %   PetscOptionsClearValue('-optionname');         % remove from the database
    %
    %   PetscObjectsView; % show all current PETSc objects, like MATLAB who
    %   A = PetscObjectsGetObject('name'); % return MATLAB pointer to PETSc object of given name
    %
    %   PetscCHKERRQ(ierr); % check if an error code is non-zero and set MATLAB error
    %   PETSC_COMM_SELF;    % returns current MPI_COMM_SELF communicator, not needed by users
    %
    %   Each of the following have their own help
    %      PetscObject - Abstract base class of all PETSc classes
    %      PetscIS     - Index set class
    %      PetscVec    - Vector class
    %      PetscMat    - Matrix class
    %      PetscPC     - Preconditioner class, not ususally used directly
    %      PetscKSP    - Linear solver class
    %      PetscSNES   - Nonlinear solver class
    %      PetscTS     - ODE integrator class
    %      PetscDM     - Manages interface between mesh data and the solvers
    %
    %  The script demo.m in bin/matlab/classes/examples/tutorials demonstrates several example
    %     usages of PETSc from MATLAB

    %  Notes: You can call PetscInitialize() multiple times so long as you call PetscFinalize() between each call
    %         The interface currently works only for sequential (one processor) runs, for
    %            a good hacker it should be relatively easy to make it parallel.
    %         All PETSc MATLAB functions that end with Internal.m are used by PETSc and should not be called
    %            directly by users.
    %
      properties (Constant)
        INSERT_VALUES=1;
        ADD_VALUES=2;
        DECIDE=-1;
        DETERMINE=-1;
        DEFAULT=-2;

        COPY_VALUES=0;

        FILE_MODE_READ=0;
        FILE_MODE_WRITE=1;
        FILE_MODE_APPEND=2;
        FILE_MODE_UPDATE=3;
        FILE_MODE_APPEND_UPDATE=4;
      end
    end