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: .seealso: `Tao`, `TaoType`, `TAOBNK`, `TAOBQNKTR`, `TAOBQNKTL`
 13: M*/
 14: PETSC_EXTERN PetscErrorCode TaoCreate_BQNKLS(Tao tao)
 15: {
 16:   TAO_BNK  *bnk;
 17:   TAO_BQNK *bqnk;

 19:   PetscFunctionBegin;
 20:   PetscCall(TaoCreate_BQNK(tao));
 21:   bnk              = (TAO_BNK *)tao->data;
 22:   bnk->update_type = BNK_UPDATE_STEP;
 23:   bqnk             = (TAO_BQNK *)bnk->ctx;
 24:   bqnk->solve      = TaoSolve_BNLS;
 25:   PetscFunctionReturn(PETSC_SUCCESS);
 26: }