1 /* Additional functions in the DMProduct API, which are not part of the general DM API. */ 2 #include <petsc/private/dmproductimpl.h> 3 4 /*@C 5 DMProductGetDM - Get sub-DM associated with a given slot of a DMProduct 6 7 Not collective 8 9 Input Parameters: 10 + dm - the DMProduct 11 - slot - which dimension slot, in the range 0 to dim-1 12 13 Output Parameter: 14 . subdm - the sub-DM 15 16 Level: advanced 17 18 .seealso: DMPRODUCT, DMProductSetDM() 19 @*/ 20 PETSC_EXTERN PetscErrorCode DMProductGetDM(DM dm,PetscInt slot,DM *subdm) 21 { 22 PetscErrorCode ierr; 23 DM_Product *product = (DM_Product*)dm->data; 24 PetscInt dim; 25 26 PetscFunctionBegin; 27 PetscValidHeaderSpecificType(dm,DM_CLASSID,1,DMPRODUCT); 28 ierr = DMGetDimension(dm,&dim);CHKERRQ(ierr); 29 if (slot >= dim || slot < 0) SETERRQ1(PetscObjectComm((PetscObject)dm),PETSC_ERR_ARG_OUTOFRANGE,"slot number must be in range 0-%D",dim-1); 30 *subdm = product->dm[slot]; 31 PetscFunctionReturn(0); 32 } 33 34 /*@C 35 DMProductSetDM - Set sub-DM associated with a given slot of DMProduct 36 37 Not collective 38 39 Input Parameters: 40 + dm - the DMProduct 41 . slot - which dimension slot, in the range 0 to dim-1 42 - subdm - the sub-DM 43 44 Notes: 45 This function does not destroy the provided sub-DM. You may safely destroy it after calling this function. 46 47 Level: advanced 48 49 .seealso: DMPRODUCT, DMProductGetDM(), DMProductSetDimensionIndex() 50 @*/ 51 PETSC_EXTERN PetscErrorCode DMProductSetDM(DM dm,PetscInt slot,DM subdm) 52 { 53 PetscErrorCode ierr; 54 DM_Product *product = (DM_Product*)dm->data; 55 PetscInt dim; 56 57 PetscFunctionBegin; 58 PetscValidHeaderSpecificType(dm,DM_CLASSID,1,DMPRODUCT); 59 ierr = DMGetDimension(dm,&dim);CHKERRQ(ierr); 60 if (slot >= dim || slot < 0) SETERRQ1(PetscObjectComm((PetscObject)dm),PETSC_ERR_ARG_OUTOFRANGE,"slot number must be in range 0-%D",dim-1); 61 ierr = PetscObjectReference((PetscObject)subdm);CHKERRQ(ierr); 62 product->dm[slot] = subdm; 63 PetscFunctionReturn(0); 64 } 65 66 /*@C 67 DMProductSetDimensionIndex - Set the dimension index associated with a given slot/sub-DM 68 69 Not collective 70 71 Input Parameters: 72 + dm - the DMProduct 73 . slot - which dimension slot, in the range 0 to dim-1 74 - idx - the dimension index of the sub-DM 75 76 Level: advanced 77 78 .seealso: DMPRODUCT 79 @*/ 80 PETSC_EXTERN PetscErrorCode DMProductSetDimensionIndex(DM dm,PetscInt slot,PetscInt idx) 81 { 82 PetscErrorCode ierr; 83 DM_Product *product = (DM_Product*)dm->data; 84 PetscInt dim; 85 86 PetscFunctionBegin; 87 PetscValidHeaderSpecificType(dm,DM_CLASSID,1,DMPRODUCT); 88 ierr = DMGetDimension(dm,&dim);CHKERRQ(ierr); 89 if (slot >= dim || slot < 0) SETERRQ1(PetscObjectComm((PetscObject)dm),PETSC_ERR_ARG_OUTOFRANGE,"slot number must be in range 0-%D",dim-1); 90 product->dim[slot] = idx; 91 PetscFunctionReturn(0); 92 } 93