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*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscInitialize(&argc,&argv,(char*)0,help)); 175f80ce2aSJacob Faibussowitsch CHKERRMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 182c71b3e2SJacob Faibussowitsch PetscCheckFalse(size != 1,PETSC_COMM_WORLD,PETSC_ERR_SUP,"This is a uniprocessor example only!"); 19c4762a1bSJed Brown 20c4762a1bSJed Brown /* Create a aij matrix for checking */ 215f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSeqAIJ(PETSC_COMM_SELF,5,5,2,NULL,&A)); 225f80ce2aSJacob Faibussowitsch CHKERRQ(PetscRandomCreate(PETSC_COMM_WORLD,&rctx)); 235f80ce2aSJacob Faibussowitsch CHKERRQ(PetscRandomSetFromOptions(rctx)); 24c4762a1bSJed Brown 25c4762a1bSJed Brown k = 0; 26c4762a1bSJed Brown for (i=0; i<5; i++) { 27c4762a1bSJed Brown nz = asi[i+1] - asi[i]; /* length of i_th row of A */ 28c4762a1bSJed Brown for (j=0; j<nz; j++) { 295f80ce2aSJacob Faibussowitsch CHKERRQ(PetscRandomGetValue(rctx,&asa[k])); 305f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValues(A,1,&i,1,&asj[k],&asa[k],INSERT_VALUES)); 315f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValues(A,1,&i,1,&asj[k],&asa[k],INSERT_VALUES)); 32c4762a1bSJed Brown if (i != asj[k]) { /* insert symmetric entry */ 335f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetValues(A,1,&asj[k],1,&i,&asa[k],INSERT_VALUES)); 34c4762a1bSJed Brown } 35c4762a1bSJed Brown k++; 36c4762a1bSJed Brown } 37c4762a1bSJed Brown } 385f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyBegin(A,MAT_FINAL_ASSEMBLY)); 395f80ce2aSJacob Faibussowitsch CHKERRQ(MatAssemblyEnd(A,MAT_FINAL_ASSEMBLY)); 40c4762a1bSJed Brown 41c4762a1bSJed Brown /* Create a baij matrix using MatCreateSeqBAIJWithArrays() */ 425f80ce2aSJacob Faibussowitsch CHKERRQ(MatGetRowIJ(A,0,PETSC_FALSE,PETSC_FALSE,&n,&ai,&aj,&flg)); 435f80ce2aSJacob Faibussowitsch CHKERRQ(MatSeqAIJGetArray(A,&aa)); 44c4762a1bSJed Brown /* WARNING: This sharing is dangerous if either A or B is later assembled */ 455f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSeqBAIJWithArrays(PETSC_COMM_SELF,1,5,5,(PetscInt*)ai,(PetscInt*)aj,aa,&B)); 465f80ce2aSJacob Faibussowitsch CHKERRQ(MatSeqAIJRestoreArray(A,&aa)); 475f80ce2aSJacob Faibussowitsch CHKERRQ(MatRestoreRowIJ(A,0,PETSC_FALSE,PETSC_FALSE,&n,&ai,&aj,&flg)); 485f80ce2aSJacob Faibussowitsch CHKERRQ(MatMultEqual(A,B,10,&flg)); 4928b400f6SJacob Faibussowitsch PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"MatMult(A,B) are NOT equal"); 50c4762a1bSJed Brown 51c4762a1bSJed Brown /* Create a sbaij matrix using MatCreateSeqSBAIJWithArrays() */ 525f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreateSeqSBAIJWithArrays(PETSC_COMM_SELF,1,5,5,asi,asj,asa,&As)); 535f80ce2aSJacob Faibussowitsch CHKERRQ(MatMultEqual(A,As,10,&flg)); 5428b400f6SJacob Faibussowitsch PetscCheck(flg,PETSC_COMM_SELF,PETSC_ERR_ARG_NOTSAMETYPE,"MatMult(A,As) are NOT equal"); 55c4762a1bSJed Brown 56c4762a1bSJed Brown /* Free spaces */ 575f80ce2aSJacob Faibussowitsch CHKERRQ(PetscRandomDestroy(&rctx)); 585f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&A)); 595f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&B)); 605f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&As)); 61*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscFinalize()); 62*b122ec5aSJacob Faibussowitsch return 0; 63c4762a1bSJed Brown } 64