2: static char help[] = "Test MatrixMarket outputing.\n\n";


  5: /*
  6:   Include "petscmat.h" so that we can use matrices.
  7:   automatically includes:
  8:      petscsys.h    - base PETSc routines   petscvec.h    - vectors
  9:      petscmat.h    - matrices
 10:      petscis.h     - index sets            petscviewer.h - viewers
 11: */
 12: #include <petscmat.h>

 16: int main(int argc,char **args)
 17: {
 18:   Mat            A;
 19:   PetscViewer    fd;                        /* viewer */
 20:   char           file[PETSC_MAX_PATH_LEN];  /* input file name */
 22:   PetscBool      flg;
 23: 
 24:   PetscInitialize(&argc,&args,(char*)0,help);

 26:   PetscOptionsGetString(NULL,"-f0",file,PETSC_MAX_PATH_LEN,&flg);
 27:   if (!flg) SETERRQ(PETSC_COMM_WORLD,1,"Must indicate binary file with the -f0 option");
 28:   PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd);
 29:   MatCreate(PETSC_COMM_WORLD,&A);
 30:   MatLoad(A,fd);
 31:   PetscViewerDestroy(&fd);

 33:   PetscViewerSetFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_MATRIXMARKET);
 34:   MatView(A,PETSC_VIEWER_STDOUT_WORLD);
 35:   MatDestroy(&A);
 36:   PetscFinalize();
 37:   return 0;
 38: }