Actual source code: bqnkls.c

      1: #include <../src/tao/bound/impls/bqnk/bqnk.h>

      3: /*MC
      4:   TAOBQNKLS - Bounded Quasi-Newton-Krylov Line Search method for nonlinear minimization with
      5:               bound constraints. This method approximates the Hessian-vector product using a
      6:               limited-memory quasi-Newton formula, and iteratively inverts the Hessian with a
      7:               Krylov solver. The quasi-Newton matrix and its settings can be accessed via the
      8:               prefix `-tao_bqnk_`. For options database, see `TAOBNK`

     10:   Level: beginner

     12:   Notes:
     13:   The base class for this method is `TAOBNK`

     15:   The various algorithmic factors can only be supplied via the options database

     17: .seealso: `Tao`, `TaoType`, `TAOBNK`, `TAOBQNKTR`, `TAOBQNKTL`, `TaoCreate()`
     18: M*/
     19: PETSC_EXTERN PetscErrorCode TaoCreate_BQNKLS(Tao tao)
     20: {
     21:   TAO_BNK  *bnk;
     22:   TAO_BQNK *bqnk;

     24:   PetscFunctionBegin;
     25:   PetscCall(TaoCreate_BQNK(tao));
     26:   bnk              = (TAO_BNK *)tao->data;
     27:   bnk->update_type = BNK_UPDATE_STEP;
     28:   bqnk             = (TAO_BQNK *)bnk->ctx;
     29:   bqnk->solve      = TaoSolve_BNLS;
     30:   PetscFunctionReturn(PETSC_SUCCESS);
     31: }