1: /*
  2:     Private data structure for Chebyshev Iteration
  3: */


  8:  #include <petsc/private/kspimpl.h>

 10: typedef struct {
 11:   PetscReal        emin,emax;    /* store user provided estimates of extreme eigenvalues or computed with kspest and transformed with tform[] */
 12:   PetscReal        emin_computed,emax_computed; /* eigenvalues as computed by kspest, if computed */
 13:   KSP              kspest;       /* KSP used to estimate eigenvalues */
 14:   PetscReal        tform[4];     /* transform from Krylov estimates to Chebyshev bounds */
 15:   PetscInt         eststeps;     /* number of kspest steps in KSP used to estimate eigenvalues */
 16:   PetscBool        usenoisy;    /* use noisy right hand side vector to estimate eigenvalues */
 17:   /* For tracking when to update the eigenvalue estimates */
 18:   PetscObjectId    amatid,    pmatid;
 19:   PetscObjectState amatstate, pmatstate;
 20: } KSP_Chebyshev;

 22: #endif