1 static char help[] = "Test MatrixMarket outputting.\n\n"; 2 3 /* 4 Include "petscmat.h" so that we can use matrices. 5 automatically includes: 6 petscsys.h - base PETSc routines petscvec.h - vectors 7 petscmat.h - matrices 8 petscis.h - index sets petscviewer.h - viewers 9 */ 10 11 #include <petscmat.h> 12 13 int main(int argc,char **args) 14 { 15 Mat A; 16 PetscViewer fd; /* viewer */ 17 char file[PETSC_MAX_PATH_LEN]; /* input file name */ 18 PetscBool flg; 19 20 PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 21 PetscCall(PetscOptionsGetString(NULL,NULL,"-f0",file,sizeof(file),&flg)); 22 PetscCheck(flg,PETSC_COMM_WORLD,PETSC_ERR_USER,"Must indicate binary file with the -f0 option"); 23 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd)); 24 PetscCall(MatCreate(PETSC_COMM_WORLD,&A)); 25 PetscCall(MatLoad(A,fd)); 26 PetscCall(PetscViewerDestroy(&fd)); 27 28 PetscCall(PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_MATRIXMARKET)); 29 PetscCall(MatView(A,PETSC_VIEWER_STDOUT_WORLD)); 30 PetscCall(PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD)); 31 PetscCall(MatDestroy(&A)); 32 PetscCall(PetscFinalize()); 33 return 0; 34 } 35 36 /*TEST 37 38 test: 39 args: -f0 ${wPETSC_DIR}/share/petsc/datafiles/matrices/ns-real-int32-float64 40 requires: !complex double !defined(PETSC_USE_64BIT_INDICES) 41 42 TEST*/ 43