MPI binding for MPI_GROUP_RANK

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Neutral Binding
MPI_GROUP_RANK(group, rank) [ IN group] group (handle) [ OUT rank] rank of the calling process in group, or MPI_UNDEFINED if the process is not a member (integer)

C Binding
int MPI_Group_rank(MPI_Group group, int *rank)

FORTRAN Binding
MPI_GROUP_RANK(GROUP, RANK, IERROR) INTEGER GROUP, RANK, IERROR

C++ Binding
(in the MPI:: namespace)
int Group::Get_rank() const