MPI_Type_get_envelope

Returns information on the number and type of input arguments used in the call that created datatype

Synopsis

#include "mpi.h"
int MPI_Type_get_envelope(datatype, num_integers, num_addresses, num_datatypes, combiner)
MPI_Datatype  datatype;
int           *num_integers;
int           *num_addresses;
int           *num_datatypes;
int           *combiner;

Input Parameters

datatype: datatype to access (handle)

Output Parameters

	num_integers	number of input integers used in the call constructing combiner (nonnegative integer)
	num_addresses	number of input addresses used in the call constructing combiner (nonnegative integer)
	num_datatypes	number of input datatypes used in the call constructing combiner (nonnegative integer)
	combiner	combiner (state)

Notes for Fortran

All MPI routines in Fortran (except for MPI_WTIME and MPI_WTICK) havean additional argument ierr at the end of the argument list. ierris an integer and has the same meaning as the return value of the routinein C. In Fortran, MPI routines are subroutines, and are invoked with thecall statement.

All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGERin Fortran.

Location:type_get_env.c