1*c4762a1bSJed Brown 2*c4762a1bSJed Brown static char help[] = "Tests MatTranspose()\n\n"; 3*c4762a1bSJed Brown 4*c4762a1bSJed Brown #include <petscmat.h> 5*c4762a1bSJed Brown 6*c4762a1bSJed Brown int main(int argc,char **args) 7*c4762a1bSJed Brown { 8*c4762a1bSJed Brown Mat C,A; 9*c4762a1bSJed Brown PetscScalar v; 10*c4762a1bSJed Brown PetscInt i,j,m = 4,n = 4,Ii,J,Istart,Iend; 11*c4762a1bSJed Brown PetscMPIInt rank,size; 12*c4762a1bSJed Brown PetscErrorCode ierr; 13*c4762a1bSJed Brown PetscBool equal=PETSC_FALSE; 14*c4762a1bSJed Brown 15*c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 16*c4762a1bSJed Brown ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr); 17*c4762a1bSJed Brown ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRQ(ierr); 18*c4762a1bSJed Brown 19*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-m",&m,NULL);CHKERRQ(ierr); 20*c4762a1bSJed Brown n = m; 21*c4762a1bSJed Brown 22*c4762a1bSJed Brown ierr = MatCreateAIJ(PETSC_COMM_WORLD,PETSC_DECIDE,PETSC_DECIDE,m*n,m*n,5,NULL,5,NULL,&C);CHKERRQ(ierr); 23*c4762a1bSJed Brown 24*c4762a1bSJed Brown /* create the symmetric matrix for the five point stencil */ 25*c4762a1bSJed Brown ierr = MatGetOwnershipRange(C,&Istart,&Iend);CHKERRQ(ierr); 26*c4762a1bSJed Brown for (Ii=Istart; Ii<Iend; Ii++) { 27*c4762a1bSJed Brown v = -1.0; i = Ii/n; j = Ii - i*n; 28*c4762a1bSJed Brown if (i>0) {J = Ii - n; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 29*c4762a1bSJed Brown if (i<m-1) {J = Ii + n; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 30*c4762a1bSJed Brown if (j>0) {J = Ii - 1; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 31*c4762a1bSJed Brown if (j<n-1) {J = Ii + 1; ierr = MatSetValues(C,1,&Ii,1,&J,&v,INSERT_VALUES);CHKERRQ(ierr);} 32*c4762a1bSJed Brown v = 4.0; ierr = MatSetValues(C,1,&Ii,1,&Ii,&v,INSERT_VALUES);CHKERRQ(ierr); 33*c4762a1bSJed Brown } 34*c4762a1bSJed Brown ierr = MatAssemblyBegin(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 35*c4762a1bSJed Brown ierr = MatAssemblyEnd(C,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 36*c4762a1bSJed Brown 37*c4762a1bSJed Brown ierr = MatTranspose(C,MAT_INITIAL_MATRIX,&A);CHKERRQ(ierr); 38*c4762a1bSJed Brown 39*c4762a1bSJed Brown ierr = MatEqual(C,A,&equal);CHKERRQ(ierr); 40*c4762a1bSJed Brown if (!equal) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"C != C^T"); 41*c4762a1bSJed Brown 42*c4762a1bSJed Brown ierr = MatDestroy(&C);CHKERRQ(ierr); 43*c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 44*c4762a1bSJed Brown ierr = PetscFinalize(); 45*c4762a1bSJed Brown return ierr; 46*c4762a1bSJed Brown } 47*c4762a1bSJed Brown 48*c4762a1bSJed Brown 49*c4762a1bSJed Brown /*TEST 50*c4762a1bSJed Brown 51*c4762a1bSJed Brown test: 52*c4762a1bSJed Brown 53*c4762a1bSJed Brown TEST*/ 54