1c4762a1bSJed Brown static char help[] = "Testing MatCreateSeqBAIJWithArrays() and MatCreateSeqSBAIJWithArrays().\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,B,As; 8c4762a1bSJed Brown const PetscInt *ai,*aj; 9c4762a1bSJed Brown PetscInt i,j,k,nz,n,asi[]={0,2,3,4,6,7}; 10c4762a1bSJed Brown PetscInt asj[]={0,4,1,2,3,4,4}; 11c4762a1bSJed Brown PetscScalar asa[7],*aa; 12c4762a1bSJed Brown PetscRandom rctx; 13c4762a1bSJed Brown PetscErrorCode ierr; 14c4762a1bSJed Brown PetscMPIInt size; 15c4762a1bSJed Brown PetscBool flg; 16c4762a1bSJed Brown 17c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 18ffc4695bSBarry Smith ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRMPI(ierr); 19*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(size != 1,PETSC_COMM_WORLD,PETSC_ERR_SUP,"This is a uniprocessor example only!"); 20c4762a1bSJed Brown 21c4762a1bSJed Brown /* Create a aij matrix for checking */ 22c4762a1bSJed Brown ierr = MatCreateSeqAIJ(PETSC_COMM_SELF,5,5,2,NULL,&A);CHKERRQ(ierr); 23c4762a1bSJed Brown ierr = PetscRandomCreate(PETSC_COMM_WORLD,&rctx);CHKERRQ(ierr); 24c4762a1bSJed Brown ierr = PetscRandomSetFromOptions(rctx);CHKERRQ(ierr); 25c4762a1bSJed Brown 26c4762a1bSJed Brown k = 0; 27c4762a1bSJed Brown for (i=0; i<5; i++) { 28c4762a1bSJed Brown nz = asi[i+1] - asi[i]; /* length of i_th row of A */ 29c4762a1bSJed Brown for (j=0; j<nz; j++) { 30c4762a1bSJed Brown ierr = PetscRandomGetValue(rctx,&asa[k]);CHKERRQ(ierr); 31c4762a1bSJed Brown ierr = MatSetValues(A,1,&i,1,&asj[k],&asa[k],INSERT_VALUES);CHKERRQ(ierr); 32c4762a1bSJed Brown ierr = MatSetValues(A,1,&i,1,&asj[k],&asa[k],INSERT_VALUES);CHKERRQ(ierr); 33c4762a1bSJed Brown if (i != asj[k]) { /* insert symmetric entry */ 34c4762a1bSJed Brown ierr = MatSetValues(A,1,&asj[k],1,&i,&asa[k],INSERT_VALUES);CHKERRQ(ierr); 35c4762a1bSJed Brown } 36c4762a1bSJed Brown k++; 37c4762a1bSJed Brown } 38c4762a1bSJed Brown } 39c4762a1bSJed Brown ierr = MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 40c4762a1bSJed Brown ierr = MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 41c4762a1bSJed Brown 42c4762a1bSJed Brown /* Create a baij matrix using MatCreateSeqBAIJWithArrays() */ 43c4762a1bSJed Brown ierr = MatGetRowIJ(A,0,PETSC_FALSE,PETSC_FALSE,&n,&ai,&aj,&flg);CHKERRQ(ierr); 44c4762a1bSJed Brown ierr = MatSeqAIJGetArray(A,&aa);CHKERRQ(ierr); 45c4762a1bSJed Brown /* WARNING: This sharing is dangerous if either A or B is later assembled */ 46c4762a1bSJed Brown ierr = MatCreateSeqBAIJWithArrays(PETSC_COMM_SELF,1,5,5,(PetscInt*)ai,(PetscInt*)aj,aa,&B);CHKERRQ(ierr); 47c4762a1bSJed Brown ierr = MatSeqAIJRestoreArray(A,&aa);CHKERRQ(ierr); 48c4762a1bSJed Brown ierr = MatRestoreRowIJ(A,0,PETSC_FALSE,PETSC_FALSE,&n,&ai,&aj,&flg);CHKERRQ(ierr); 49c4762a1bSJed Brown ierr = MatMultEqual(A,B,10,&flg);CHKERRQ(ierr); 50*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(!flg,PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"MatMult(A,B) are NOT equal"); 51c4762a1bSJed Brown 52c4762a1bSJed Brown /* Create a sbaij matrix using MatCreateSeqSBAIJWithArrays() */ 53c4762a1bSJed Brown ierr = MatCreateSeqSBAIJWithArrays(PETSC_COMM_SELF,1,5,5,asi,asj,asa,&As);CHKERRQ(ierr); 54c4762a1bSJed Brown ierr = MatMultEqual(A,As,10,&flg);CHKERRQ(ierr); 55*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(!flg,PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"MatMult(A,As) are NOT equal"); 56c4762a1bSJed Brown 57c4762a1bSJed Brown /* Free spaces */ 58c4762a1bSJed Brown ierr = PetscRandomDestroy(&rctx);CHKERRQ(ierr); 59c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 60c4762a1bSJed Brown ierr = MatDestroy(&B);CHKERRQ(ierr); 61c4762a1bSJed Brown ierr = MatDestroy(&As);CHKERRQ(ierr); 62c4762a1bSJed Brown ierr = PetscFinalize(); 63c4762a1bSJed Brown return ierr; 64c4762a1bSJed Brown } 65