1: #include <petsc/private/tsimpl.h>

  3: static PetscErrorCode TSAdaptChoose_None(TSAdapt adapt, TS ts, PetscReal h, PetscInt *next_sc, PetscReal *next_h, PetscBool *accept, PetscReal *wlte, PetscReal *wltea, PetscReal *wlter)
  4: {
  5:   PetscFunctionBegin;
  6:   *accept  = PETSC_TRUE;
  7:   *next_sc = 0;  /* Reuse the same order scheme */
  8:   *next_h  = h;  /* Reuse the old step */
  9:   *wlte    = -1; /* Weighted local truncation error was not evaluated */
 10:   *wltea   = -1; /* Weighted absolute local truncation error was not evaluated */
 11:   *wlter   = -1; /* Weighted relative local truncation error was not evaluated */
 12:   PetscFunctionReturn(PETSC_SUCCESS);
 13: }

 15: /*MC
 16:    TSADAPTNONE - Time stepping controller that always accepts the current step and does not change it

 18:    Level: intermediate

 20: .seealso: [](ch_ts), `TS`, `TSAdapt`, `TSAdaptChoose()`, `TSAdaptType`
 21: M*/
 22: PETSC_EXTERN PetscErrorCode TSAdaptCreate_None(TSAdapt adapt)
 23: {
 24:   PetscFunctionBegin;
 25:   adapt->ops->choose = TSAdaptChoose_None;
 26:   PetscFunctionReturn(PETSC_SUCCESS);
 27: }