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MPI_Get_elements(3) MPI MPI_Get_elements(3)
MPI_Get_elements - Returns the number of basic elements in a datatype
int MPI_Get_elements(MPICH2_CONST MPI_Status *status, MPI_Datatype datatype, int *elements)
status - return status of receive operation (Status)
- datatype used by receive operation (handle)
count - number of received basic elements (integer)
If the size of the datatype is zero and the amount of data returned as
determined by status is also zero, this routine will return a count of
zero. This is consistent with a clarification made by the MPI Forum.
NOTES FOR FORTRAN
All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK ) have
an additional argument ierr at the end of the argument list. ierr is
an integer and has the same meaning as the return value of the routine
in C. In Fortran, MPI routines are subroutines, and are invoked with
the call statement.
All MPI objects (e.g., MPI_Datatype , MPI_Comm ) are of type INTEGER in
All MPI routines (except MPI_Wtime and MPI_Wtick ) return an error
value; C routines as the value of the function and Fortran routines in
the last argument. Before the value is returned, the current MPI error
handler is called. By default, this error handler aborts the MPI job.
The error handler may be changed with MPI_Comm_set_errhandler (for
communicators), MPI_File_set_errhandler (for files), and
MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine
MPI_Errhandler_set may be used but its use is deprecated. The
predefined error handler MPI_ERRORS_RETURN may be used to cause error
values to be returned. Note that MPI does not guarentee that an MPI
program can continue past an error; however, MPI implementations will
attempt to continue whenever possible.
- No error; MPI routine completed successfully.