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 PetscFunctionBeginUser; 21 PetscCall(PetscInitialize(&argc, &args, (char *)0, help)); 22 PetscCall(PetscOptionsGetString(NULL, NULL, "-f0", file, sizeof(file), &flg)); 23 PetscCheck(flg, PETSC_COMM_WORLD, PETSC_ERR_USER, "Must indicate binary file with the -f0 option"); 24 PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD, file, FILE_MODE_READ, &fd)); 25 PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 26 PetscCall(MatLoad(A, fd)); 27 PetscCall(PetscViewerDestroy(&fd)); 28 29 PetscCall(PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD, PETSC_VIEWER_ASCII_MATRIXMARKET)); 30 PetscCall(MatView(A, PETSC_VIEWER_STDOUT_WORLD)); 31 PetscCall(PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD)); 32 PetscCall(MatDestroy(&A)); 33 PetscCall(PetscFinalize()); 34 return 0; 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