1c4762a1bSJed Brown static char help[] = "Tests MatShift for SeqAIJ matrices with some missing diagonal entries\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscmat.h> 4c4762a1bSJed Brown 5c4762a1bSJed Brown int main(int argc,char **argv) 6c4762a1bSJed Brown { 7c4762a1bSJed Brown Mat A; 8c4762a1bSJed Brown PetscInt coli[4],row; 9c4762a1bSJed Brown PetscScalar vali[4]; 10c4762a1bSJed Brown PetscMPIInt size; 11c4762a1bSJed Brown 12*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscInitialize(&argc,&argv,(char*)0,help)); 135f80ce2aSJacob Faibussowitsch CHKERRMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 142c71b3e2SJacob Faibussowitsch PetscCheckFalse(size != 1,PETSC_COMM_WORLD,PETSC_ERR_SUP,"This is a uniprocessor example only!"); 15c4762a1bSJed Brown 165f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreate(PETSC_COMM_SELF,&A)); 175f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetSizes(A,4,4,4,4)); 185f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetType(A,MATSEQAIJ)); 195f80ce2aSJacob Faibussowitsch CHKERRQ(MatSeqAIJSetPreallocation(A,4,NULL)); 20c4762a1bSJed Brown 21c4762a1bSJed Brown row = 0; coli[0] = 1; coli[1] = 3; vali[0] = 1.0; vali[1] = 2.0; 225f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValues(A,1,&row,2,coli,vali,ADD_VALUES)); 23c4762a1bSJed Brown 24c4762a1bSJed Brown row = 1; coli[0] = 0; coli[1] = 1; coli[2] = 2; coli[3] = 3; vali[0] = 3.0; vali[1] = 4.0; vali[2] = 5.0; vali[3] = 6.0; 255f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValues(A,1,&row,4,coli,vali,ADD_VALUES)); 26c4762a1bSJed Brown 27c4762a1bSJed Brown row = 2; coli[0] = 0; coli[1] = 3; vali[0] = 7.0; vali[1] = 8.0; 285f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValues(A,1,&row,2,coli,vali,ADD_VALUES)); 29c4762a1bSJed Brown 305f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 315f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 325f80ce2aSJacob Faibussowitsch CHKERRQ(MatView(A,PETSC_VIEWER_STDOUT_WORLD)); 33c4762a1bSJed Brown 345f80ce2aSJacob Faibussowitsch CHKERRQ(MatShift(A,0.0)); 355f80ce2aSJacob Faibussowitsch CHKERRQ(MatView(A,PETSC_VIEWER_STDOUT_WORLD)); 36c4762a1bSJed Brown 375f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&A)); 38*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscFinalize()); 39*b122ec5aSJacob Faibussowitsch return 0; 40c4762a1bSJed Brown } 41c4762a1bSJed Brown 42c4762a1bSJed Brown /*TEST 43c4762a1bSJed Brown 44c4762a1bSJed Brown test: 45c4762a1bSJed Brown 46c4762a1bSJed Brown TEST*/ 47