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 Mat A; 15 PetscViewer fd; /* viewer */ 16 char file[PETSC_MAX_PATH_LEN]; /* input file name */ 17 PetscBool flg; 18 19 PetscFunctionBeginUser; 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