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 PetscErrorCode ierr; 19 PetscBool flg; 20 21 ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 22 ierr = PetscOptionsGetString(NULL,NULL,"-f0",file,sizeof(file),&flg);CHKERRQ(ierr); 23 if (!flg) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_USER,"Must indicate binary file with the -f0 option"); 24 ierr = PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd);CHKERRQ(ierr); 25 ierr = MatCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr); 26 ierr = MatLoad(A,fd);CHKERRQ(ierr); 27 ierr = PetscViewerDestroy(&fd);CHKERRQ(ierr); 28 29 ierr = PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_MATRIXMARKET);CHKERRQ(ierr); 30 ierr = MatView(A,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 31 ierr = PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 32 ierr = MatDestroy(&A);CHKERRQ(ierr); 33 ierr = PetscFinalize(); 34 return ierr; 35 } 36 37 /*TEST 38 39 test: 40 args: -f0 ${wPETSC_DIR}/share/petsc/datafiles/matrices/ns-real-int32-float64 41 requires: !complex double !defined(PETSC_USE_64BIT_INDICES) 42 43 TEST*/ 44