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 PetscMPIInt size; 14c4762a1bSJed Brown PetscBool flg; 15c4762a1bSJed Brown 16*327415f7SBarry Smith PetscFunctionBeginUser; 179566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 189566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 19be096a46SBarry Smith PetscCheck(size == 1,PETSC_COMM_WORLD,PETSC_ERR_WRONG_MPI_SIZE,"This is a uniprocessor example only!"); 20c4762a1bSJed Brown 21c4762a1bSJed Brown /* Create a aij matrix for checking */ 229566063dSJacob Faibussowitsch PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF,5,5,2,NULL,&A)); 239566063dSJacob Faibussowitsch PetscCall(PetscRandomCreate(PETSC_COMM_WORLD,&rctx)); 249566063dSJacob Faibussowitsch PetscCall(PetscRandomSetFromOptions(rctx)); 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++) { 309566063dSJacob Faibussowitsch PetscCall(PetscRandomGetValue(rctx,&asa[k])); 319566063dSJacob Faibussowitsch PetscCall(MatSetValues(A,1,&i,1,&asj[k],&asa[k],INSERT_VALUES)); 329566063dSJacob Faibussowitsch PetscCall(MatSetValues(A,1,&i,1,&asj[k],&asa[k],INSERT_VALUES)); 33c4762a1bSJed Brown if (i != asj[k]) { /* insert symmetric entry */ 349566063dSJacob Faibussowitsch PetscCall(MatSetValues(A,1,&asj[k],1,&i,&asa[k],INSERT_VALUES)); 35c4762a1bSJed Brown } 36c4762a1bSJed Brown k++; 37c4762a1bSJed Brown } 38c4762a1bSJed Brown } 399566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 409566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 41c4762a1bSJed Brown 42c4762a1bSJed Brown /* Create a baij matrix using MatCreateSeqBAIJWithArrays() */ 439566063dSJacob Faibussowitsch PetscCall(MatGetRowIJ(A,0,PETSC_FALSE,PETSC_FALSE,&n,&ai,&aj,&flg)); 449566063dSJacob Faibussowitsch PetscCall(MatSeqAIJGetArray(A,&aa)); 45c4762a1bSJed Brown /* WARNING: This sharing is dangerous if either A or B is later assembled */ 469566063dSJacob Faibussowitsch PetscCall(MatCreateSeqBAIJWithArrays(PETSC_COMM_SELF,1,5,5,(PetscInt*)ai,(PetscInt*)aj,aa,&B)); 479566063dSJacob Faibussowitsch PetscCall(MatSeqAIJRestoreArray(A,&aa)); 489566063dSJacob Faibussowitsch PetscCall(MatRestoreRowIJ(A,0,PETSC_FALSE,PETSC_FALSE,&n,&ai,&aj,&flg)); 499566063dSJacob Faibussowitsch PetscCall(MatMultEqual(A,B,10,&flg)); 5028b400f6SJacob Faibussowitsch PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"MatMult(A,B) are NOT equal"); 51c4762a1bSJed Brown 52c4762a1bSJed Brown /* Create a sbaij matrix using MatCreateSeqSBAIJWithArrays() */ 539566063dSJacob Faibussowitsch PetscCall(MatCreateSeqSBAIJWithArrays(PETSC_COMM_SELF,1,5,5,asi,asj,asa,&As)); 549566063dSJacob Faibussowitsch PetscCall(MatMultEqual(A,As,10,&flg)); 5528b400f6SJacob Faibussowitsch PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"MatMult(A,As) are NOT equal"); 56c4762a1bSJed Brown 57c4762a1bSJed Brown /* Free spaces */ 589566063dSJacob Faibussowitsch PetscCall(PetscRandomDestroy(&rctx)); 599566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 609566063dSJacob Faibussowitsch PetscCall(MatDestroy(&B)); 619566063dSJacob Faibussowitsch PetscCall(MatDestroy(&As)); 629566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 63b122ec5aSJacob Faibussowitsch return 0; 64c4762a1bSJed Brown } 65