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 MatAXPY_HT(Mat Y,PetscScalar a,Mat X,MatStructure str) 85 { 86 Mat_HT *Ya = (Mat_HT*)Y->data; 87 Mat_HT *Xa = (Mat_HT*)X->data; 88 Mat M = Ya->A; 89 Mat N = Xa->A; 90 PetscErrorCode ierr; 91 92 PetscFunctionBegin; 93 ierr = MatAXPY(M,a,N,str);CHKERRQ(ierr); 94 PetscFunctionReturn(0); 95 } 96 97 PetscErrorCode MatHermitianTransposeGetMat_HT(Mat N,Mat *M) 98 { 99 Mat_HT *Na = (Mat_HT*)N->data; 100 101 PetscFunctionBegin; 102 *M = Na->A; 103 PetscFunctionReturn(0); 104 } 105 106 /*@ 107 MatHermitianTransposeGetMat - Gets the Mat object stored inside a MATTRANSPOSEMAT 108 109 Logically collective on Mat 110 111 Input Parameter: 112 . A - the MATTRANSPOSE matrix 113 114 Output Parameter: 115 . M - the matrix object stored inside A 116 117 Level: intermediate 118 119 .seealso: MatCreateHermitianTranspose() 120 121 @*/ 122 PetscErrorCode MatHermitianTransposeGetMat(Mat A,Mat *M) 123 { 124 PetscErrorCode ierr; 125 126 PetscFunctionBegin; 127 PetscValidHeaderSpecific(A,MAT_CLASSID,1); 128 PetscValidType(A,1); 129 PetscValidPointer(M,2); 130 ierr = PetscUseMethod(A,"MatHermitianTransposeGetMat_C",(Mat,Mat*),(A,M));CHKERRQ(ierr); 131 PetscFunctionReturn(0); 132 } 133 134 /*@ 135 MatCreateHermitianTranspose - Creates a new matrix object that behaves like A'* 136 137 Collective on Mat 138 139 Input Parameter: 140 . A - the (possibly rectangular) matrix 141 142 Output Parameter: 143 . N - the matrix that represents A'* 144 145 Level: intermediate 146 147 Notes: 148 The hermitian transpose A' is NOT actually formed! Rather the new matrix 149 object performs the matrix-vector product by using the MatMultHermitianTranspose() on 150 the original matrix 151 152 .seealso: MatCreateNormal(), MatMult(), MatMultHermitianTranspose(), MatCreate() 153 154 @*/ 155 PetscErrorCode MatCreateHermitianTranspose(Mat A,Mat *N) 156 { 157 PetscErrorCode ierr; 158 PetscInt m,n; 159 Mat_HT *Na; 160 161 PetscFunctionBegin; 162 ierr = MatGetLocalSize(A,&m,&n);CHKERRQ(ierr); 163 ierr = MatCreate(PetscObjectComm((PetscObject)A),N);CHKERRQ(ierr); 164 ierr = MatSetSizes(*N,n,m,PETSC_DECIDE,PETSC_DECIDE);CHKERRQ(ierr); 165 ierr = PetscLayoutSetUp((*N)->rmap);CHKERRQ(ierr); 166 ierr = PetscLayoutSetUp((*N)->cmap);CHKERRQ(ierr); 167 ierr = PetscObjectChangeTypeName((PetscObject)*N,MATTRANSPOSEMAT);CHKERRQ(ierr); 168 169 ierr = PetscNewLog(*N,&Na);CHKERRQ(ierr); 170 (*N)->data = (void*) Na; 171 ierr = PetscObjectReference((PetscObject)A);CHKERRQ(ierr); 172 Na->A = A; 173 174 (*N)->ops->destroy = MatDestroy_HT; 175 (*N)->ops->mult = MatMult_HT; 176 (*N)->ops->multadd = MatMultAdd_HT; 177 (*N)->ops->multhermitiantranspose = MatMultHermitianTranspose_HT; 178 (*N)->ops->multhermitiantransposeadd = MatMultHermitianTransposeAdd_HT; 179 (*N)->ops->duplicate = MatDuplicate_HT; 180 (*N)->ops->getvecs = MatCreateVecs_HT; 181 (*N)->ops->axpy = MatAXPY_HT; 182 (*N)->assembled = PETSC_TRUE; 183 184 ierr = PetscObjectComposeFunction((PetscObject)(*N),"MatHermitianTransposeGetMat_C",MatHermitianTransposeGetMat_HT);CHKERRQ(ierr); 185 ierr = MatSetBlockSizes(*N,PetscAbs(A->cmap->bs),PetscAbs(A->rmap->bs));CHKERRQ(ierr); 186 ierr = MatSetUp(*N);CHKERRQ(ierr); 187 PetscFunctionReturn(0); 188 } 189