1 /* 2 Common tools for constructing discretizations 3 */ 4 #if !defined(__PETSCDT_H) 5 #define __PETSCDT_H 6 7 #include <petscsys.h> 8 9 /*S 10 PetscQuadrature - Quadrature rule for integration. 11 12 Level: developer 13 14 .seealso: PetscQuadratureCreate(), PetscQuadratureDestroy() 15 S*/ 16 typedef struct _p_PetscQuadrature *PetscQuadrature; 17 18 PETSC_EXTERN PetscErrorCode PetscQuadratureCreate(MPI_Comm, PetscQuadrature *); 19 PETSC_EXTERN PetscErrorCode PetscQuadratureGetOrder(PetscQuadrature, PetscInt*); 20 PETSC_EXTERN PetscErrorCode PetscQuadratureSetOrder(PetscQuadrature, PetscInt); 21 PETSC_EXTERN PetscErrorCode PetscQuadratureGetData(PetscQuadrature, PetscInt*, PetscInt*, const PetscReal *[], const PetscReal *[]); 22 PETSC_EXTERN PetscErrorCode PetscQuadratureSetData(PetscQuadrature, PetscInt, PetscInt, const PetscReal [], const PetscReal []); 23 PETSC_EXTERN PetscErrorCode PetscQuadratureView(PetscQuadrature, PetscViewer); 24 PETSC_EXTERN PetscErrorCode PetscQuadratureDestroy(PetscQuadrature *); 25 26 typedef struct { 27 PetscReal *v0, *n, *J, *invJ, *detJ, *vol; 28 } PetscCellGeometry; 29 30 PETSC_EXTERN PetscErrorCode PetscDTLegendreEval(PetscInt,const PetscReal*,PetscInt,const PetscInt*,PetscReal*,PetscReal*,PetscReal*); 31 PETSC_EXTERN PetscErrorCode PetscDTGaussQuadrature(PetscInt,PetscReal,PetscReal,PetscReal*,PetscReal*); 32 PETSC_EXTERN PetscErrorCode PetscDTReconstructPoly(PetscInt,PetscInt,const PetscReal*,PetscInt,const PetscReal*,PetscReal*); 33 PETSC_EXTERN PetscErrorCode PetscDTGaussTensorQuadrature(PetscInt,PetscInt,PetscReal,PetscReal,PetscQuadrature*); 34 PETSC_EXTERN PetscErrorCode PetscDTGaussJacobiQuadrature(PetscInt,PetscInt,PetscReal,PetscReal,PetscQuadrature*); 35 36 #endif 37