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>

 14: int main(int argc,char **args)
 15: {
 16:   Mat            A;
 17:   PetscViewer    fd;                        /* viewer */
 18:   char           file[PETSC_MAX_PATH_LEN];  /* input file name */
 20:   PetscBool      flg;
 21: 
 22:   PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr;
 23:   PetscOptionsGetString(NULL,NULL,"-f0",file,PETSC_MAX_PATH_LEN,&flg);
 24:   if (!flg) SETERRQ(PETSC_COMM_WORLD,1,"Must indicate binary file with the -f0 option");
 25:   PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd);
 26:   MatCreate(PETSC_COMM_WORLD,&A);
 27:   MatLoad(A,fd);
 28:   PetscViewerDestroy(&fd);

 30:   PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_MATRIXMARKET);
 31:   MatView(A,PETSC_VIEWER_STDOUT_WORLD);
 32:   PetscViewerPopFormat(PETSC_VIEWER_STDOUT_WORLD);
 33:   MatDestroy(&A);
 34:   PetscFinalize();
 35:   return ierr;
 36: }