Retrieves the length of the value associated with a key


#include "mpi.h"
int MPI_Info_get_valuelen(MPI_Info info, char *key, int *valuelen, int *flag)

Input Parameters

info info object (handle)
key key (string)

Output Parameters

valuelen length of value argument (integer)
flag true if key defined, false if not (boolean)

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 Fortran.