/*D
   MPI_Wtime - Returns an elapsed time on the calling processor

Synopsis:
.vb
double MPI_Wtime(void)
.ve

  Return value:
  Time in seconds of resolution of MPI_Wtime

  Notes for Fortran:
  This is a function, declared as 'DOUBLE PRECISION MPI_WTICK()' in Fortran.


.seealso: MPI_Wtime, MPI_Comm_get_attr, MPI_Attr_get
D*/

