Actual source code: cgimpl.h
petsc-3.7.1 2016-05-15
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      2: /*
      3:     Private Krylov Context Structure (KSP) for Conjugate Gradient

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

      9: */

     14: /*
     15:         Defines the basic KSP object
     16: */
     17: #include <petsc/private/kspimpl.h>

     19: /*
     20:     The field should remain the same since it is shared by the BiCG code
     21: */

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

     30:   PetscBool singlereduction;          /* use variant of CG that combines both inner products */
     31: } KSP_CG;

     33: #endif