1: #ifndef PETSC_GSIMPL_H
  2: #define PETSC_GSIMPL_H

  4: #include <petsc/private/snesimpl.h>
  5: #include <petscdm.h>

  7: typedef struct {
  8:   PetscInt   sweeps;     /* number of sweeps through the local subdomain before neighbor communication */
  9:   PetscInt   max_its;    /* maximum iterations of the inner pointblock solver */
 10:   PetscReal  rtol;       /* relative tolerance of the inner pointblock solver */
 11:   PetscReal  abstol;     /* absolute tolerance of the inner pointblock solver */
 12:   PetscReal  stol;       /* step tolerance of the inner pointblock solver */
 13:   PetscReal  h;          /* differencing for secant variants */
 14:   PetscBool  secant_mat; /* use the Jacobian to get the coloring for the secant */
 15:   ISColoring coloring;
 16: } SNES_NGS;

 18: PETSC_EXTERN PetscErrorCode SNESComputeNGSDefaultSecant(SNES, Vec, Vec, void *);

 20: #endif // PETSC_GSIMPL_H