/*D
   MPI_File_read_at_all - Collective read using explicit offset

Synopsis:
.vb
int MPI_File_read_at_all(MPI_File fh, MPI_Offset offset, void *buf, int count,
                         MPI_Datatype datatype, MPI_Status *status)
.ve
.vb
int MPI_File_read_at_all_c(MPI_File fh, MPI_Offset offset, void *buf,
                           MPI_Count count, MPI_Datatype datatype,
                           MPI_Status *status)
.ve

Input Parameters:
+ fh - file handle (handle)
. offset - file offset (integer)
. count - number of elements in buffer (integer)
- datatype - datatype of each buffer element (handle)

Output Parameters:
+ buf - initial address of buffer (choice)
- status - status object (Status)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_BUFFER
.N MPI_ERR_COUNT
.N MPI_ERR_TYPE
.N MPI_ERR_OTHER

D*/

