1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests MatTranspose()\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown int main(int argc,char **args) 7c4762a1bSJed Brown { 8c4762a1bSJed Brown Mat C,A; 9c4762a1bSJed Brown PetscScalar v; 10c4762a1bSJed Brown PetscInt i,j,m = 4,n = 4,Ii,J,Istart,Iend; 11c4762a1bSJed Brown PetscMPIInt rank,size; 12c4762a1bSJed Brown PetscErrorCode ierr; 13c4762a1bSJed Brown PetscBool equal=PETSC_FALSE; 14c4762a1bSJed Brown 15c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 16ffc4695bSBarry Smith ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRMPI(ierr); 17ffc4695bSBarry Smith ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRMPI(ierr); 18c4762a1bSJed Brown 19c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-m",&m,NULL);CHKERRQ(ierr); 20c4762a1bSJed Brown n = m; 21c4762a1bSJed Brown 22c4762a1bSJed Brown ierr = MatCreateAIJ(PETSC_COMM_WORLD,PETSC_DECIDE,PETSC_DECIDE,m*n,m*n,5,NULL,5,NULL,&C);CHKERRQ(ierr); 23c4762a1bSJed Brown 24c4762a1bSJed Brown /* create the symmetric matrix for the five point stencil */ 25c4762a1bSJed Brown ierr = MatGetOwnershipRange(C,&Istart,&Iend);CHKERRQ(ierr); 26c4762a1bSJed Brown for (Ii=Istart; Ii<Iend; Ii++) { 27c4762a1bSJed Brown v = -1.0; i = Ii/n; j = Ii - i*n; 28c4762a1bSJed Brown if (i>0) {J = Ii - n; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 29c4762a1bSJed Brown if (i<m-1) {J = Ii + n; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 30c4762a1bSJed Brown if (j>0) {J = Ii - 1; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 31c4762a1bSJed Brown if (j<n-1) {J = Ii + 1; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 32c4762a1bSJed Brown v = 4.0; ierr = MatSetValues(C,1,&Ii,1,&Ii,&v,INSERT_VALUES);CHKERRQ(ierr); 33c4762a1bSJed Brown } 34c4762a1bSJed Brown ierr = MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 35c4762a1bSJed Brown ierr = MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 36c4762a1bSJed Brown 37c4762a1bSJed Brown ierr = MatTranspose(C,MAT_INITIAL_MATRIX,&A);CHKERRQ(ierr); 38c4762a1bSJed Brown 39c4762a1bSJed Brown ierr = MatEqual(C,A,&equal);CHKERRQ(ierr); 40*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(!equal,PETSC_COMM_SELF,PETSC_ERR_SUP,"C != C^T"); 41c4762a1bSJed Brown 42c4762a1bSJed Brown ierr = MatDestroy(&C);CHKERRQ(ierr); 43c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 44c4762a1bSJed Brown ierr = PetscFinalize(); 45c4762a1bSJed Brown return ierr; 46c4762a1bSJed Brown } 47c4762a1bSJed Brown 48c4762a1bSJed Brown /*TEST 49c4762a1bSJed Brown 50c4762a1bSJed Brown test: 51c4762a1bSJed Brown 52c4762a1bSJed Brown TEST*/ 53