1 2 #include <petsc/private/matimpl.h> /*I "petscmat.h" I*/ 3 4 typedef struct { 5 Mat A; 6 } Mat_HT; 7 8 PetscErrorCode MatMult_HT(Mat N,Vec x,Vec y) 9 { 10 Mat_HT *Na = (Mat_HT*)N->data; 11 PetscErrorCode ierr; 12 13 PetscFunctionBegin; 14 ierr = MatMultHermitianTranspose(Na->A,x,y);CHKERRQ(ierr); 15 PetscFunctionReturn(0); 16 } 17 18 PetscErrorCode MatMultAdd_HT(Mat N,Vec v1,Vec v2,Vec v3) 19 { 20 Mat_HT *Na = (Mat_HT*)N->data; 21 PetscErrorCode ierr; 22 23 PetscFunctionBegin; 24 ierr = MatMultHermitianTransposeAdd(Na->A,v1,v2,v3);CHKERRQ(ierr); 25 PetscFunctionReturn(0); 26 } 27 28 PetscErrorCode MatMultHermitianTranspose_HT(Mat N,Vec x,Vec y) 29 { 30 Mat_HT *Na = (Mat_HT*)N->data; 31 PetscErrorCode ierr; 32 33 PetscFunctionBegin; 34 ierr = MatMult(Na->A,x,y);CHKERRQ(ierr); 35 PetscFunctionReturn(0); 36 } 37 38 PetscErrorCode MatMultHermitianTransposeAdd_HT(Mat N,Vec v1,Vec v2,Vec v3) 39 { 40 Mat_HT *Na = (Mat_HT*)N->data; 41 PetscErrorCode ierr; 42 43 PetscFunctionBegin; 44 ierr = MatMultAdd(Na->A,v1,v2,v3);CHKERRQ(ierr); 45 PetscFunctionReturn(0); 46 } 47 48 PetscErrorCode MatDestroy_HT(Mat N) 49 { 50 Mat_HT *Na = (Mat_HT*)N->data; 51 PetscErrorCode ierr; 52 53 PetscFunctionBegin; 54 ierr = MatDestroy(&Na->A);CHKERRQ(ierr); 55 ierr = PetscFree(N->data);CHKERRQ(ierr); 56 PetscFunctionReturn(0); 57 } 58 59 PetscErrorCode MatDuplicate_HT(Mat N, MatDuplicateOption op, Mat* m) 60 { 61 Mat_HT *Na = (Mat_HT*)N->data; 62 PetscErrorCode ierr; 63 64 PetscFunctionBegin; 65 if (op == MAT_COPY_VALUES) { 66 ierr = MatHermitianTranspose(Na->A,MAT_INITIAL_MATRIX,m);CHKERRQ(ierr); 67 } else if (op == MAT_DO_NOT_COPY_VALUES) { 68 ierr = MatDuplicate(Na->A,MAT_DO_NOT_COPY_VALUES,m);CHKERRQ(ierr); 69 ierr = MatHermitianTranspose(*m,MAT_INPLACE_MATRIX,m);CHKERRQ(ierr); 70 } else SETERRQ(PetscObjectComm((PetscObject)N),PETSC_ERR_SUP,"MAT_SHARE_NONZERO_PATTERN not supported for this matrix type"); 71 PetscFunctionReturn(0); 72 } 73 74 PetscErrorCode MatCreateVecs_HT(Mat N,Vec *r, Vec *l) 75 { 76 Mat_HT *Na = (Mat_HT*)N->data; 77 PetscErrorCode ierr; 78 79 PetscFunctionBegin; 80 ierr = MatCreateVecs(Na->A,l,r);CHKERRQ(ierr); 81 PetscFunctionReturn(0); 82 } 83 84 PetscErrorCode MatHermitianTransposeGetMat_HT(Mat N,Mat *M) 85 { 86 Mat_HT *Na = (Mat_HT*)N->data; 87 88 PetscFunctionBegin; 89 *M = Na->A; 90 PetscFunctionReturn(0); 91 } 92 93 /*@ 94 MatHermitianTransposeGetMat - Gets the Mat object stored inside a MATTRANSPOSEMAT 95 96 Logically collective on Mat 97 98 Input Parameter: 99 . A - the MATTRANSPOSE matrix 100 101 Output Parameter: 102 . M - the matrix object stored inside A 103 104 Level: intermediate 105 106 .seealso: MatCreateHermitianTranspose() 107 108 @*/ 109 PetscErrorCode MatHermitianTransposeGetMat(Mat A,Mat *M) 110 { 111 PetscErrorCode ierr; 112 113 PetscFunctionBegin; 114 PetscValidHeaderSpecific(A,MAT_CLASSID,1); 115 PetscValidType(A,1); 116 PetscValidPointer(M,2); 117 ierr = PetscUseMethod(A,"MatHermitianTransposeGetMat_C",(Mat,Mat*),(A,M));CHKERRQ(ierr); 118 PetscFunctionReturn(0); 119 } 120 121 /*@ 122 MatCreateHermitianTranspose - Creates a new matrix object that behaves like A'* 123 124 Collective on Mat 125 126 Input Parameter: 127 . A - the (possibly rectangular) matrix 128 129 Output Parameter: 130 . N - the matrix that represents A'* 131 132 Level: intermediate 133 134 Notes: 135 The hermitian transpose A' is NOT actually formed! Rather the new matrix 136 object performs the matrix-vector product by using the MatMultHermitianTranspose() on 137 the original matrix 138 139 .seealso: MatCreateNormal(), MatMult(), MatMultHermitianTranspose(), MatCreate() 140 141 @*/ 142 PetscErrorCode MatCreateHermitianTranspose(Mat A,Mat *N) 143 { 144 PetscErrorCode ierr; 145 PetscInt m,n; 146 Mat_HT *Na; 147 148 PetscFunctionBegin; 149 ierr = MatGetLocalSize(A,&m,&n);CHKERRQ(ierr); 150 ierr = MatCreate(PetscObjectComm((PetscObject)A),N);CHKERRQ(ierr); 151 ierr = MatSetSizes(*N,n,m,PETSC_DECIDE,PETSC_DECIDE);CHKERRQ(ierr); 152 ierr = PetscLayoutSetUp((*N)->rmap);CHKERRQ(ierr); 153 ierr = PetscLayoutSetUp((*N)->cmap);CHKERRQ(ierr); 154 ierr = PetscObjectChangeTypeName((PetscObject)*N,MATTRANSPOSEMAT);CHKERRQ(ierr); 155 156 ierr = PetscNewLog(*N,&Na);CHKERRQ(ierr); 157 (*N)->data = (void*) Na; 158 ierr = PetscObjectReference((PetscObject)A);CHKERRQ(ierr); 159 Na->A = A; 160 161 (*N)->ops->destroy = MatDestroy_HT; 162 (*N)->ops->mult = MatMult_HT; 163 (*N)->ops->multadd = MatMultAdd_HT; 164 (*N)->ops->multhermitiantranspose = MatMultHermitianTranspose_HT; 165 (*N)->ops->multhermitiantransposeadd = MatMultHermitianTransposeAdd_HT; 166 (*N)->ops->duplicate = MatDuplicate_HT; 167 (*N)->ops->getvecs = MatCreateVecs_HT; 168 (*N)->assembled = PETSC_TRUE; 169 170 ierr = PetscObjectComposeFunction((PetscObject)(*N),"MatHermitianTransposeGetMat_C",MatHermitianTransposeGetMat_HT);CHKERRQ(ierr); 171 ierr = MatSetBlockSizes(*N,PetscAbs(A->cmap->bs),PetscAbs(A->rmap->bs));CHKERRQ(ierr); 172 ierr = MatSetUp(*N);CHKERRQ(ierr); 173 PetscFunctionReturn(0); 174 } 175