/*D
   MPI_File_set_atomicity - Sets the atomicity mode

Synopsis:
.vb
int MPI_File_set_atomicity(MPI_File fh, int flag)
.ve

Input Parameters:
+ fh - file handle (handle)
- flag - true to set atomic mode, false to set nonatomic mode (logical)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_OTHER

D*/

