1: /* "$Id: cgctx.h,v 1.12 2001/08/07 21:30:43 bsmith Exp $"; */

  3: /*  
  4:     Private Krylov Context Structure (KSP) for Conjugate Gradient 

  6:     This one is very simple. It contains a flag indicating the symmetry 
  7:    structure of the matrix and work space for (optionally) computing
  8:    eigenvalues.

 10: */


 15: /*
 16:         Defines the basic KSP object
 17: */
 18:  #include src/sles/ksp/kspimpl.h

 20: /*
 21:     The field should remain the same since it is shared by the BiCG code
 22: */

 24: typedef struct {
 25:   KSPCGType   type;                 /* type of system (symmetric or Hermitian) */
 26:   PetscScalar emin,emax;           /* eigenvalues */
 27:   PetscScalar *e,*d;
 28:   PetscReal   *ee,*dd;             /* work space for Lanczos algorithm */
 29: } KSP_CG;

 31: #endif