\? Description. This is a FORTRAN 77-callable version of the
HPF_LOCAL function LOCAL_UINDEX.
\? Arguments.
L_UINDEX is a rank-one, integer array of size equal to
at least the value returned by F77_LOCAL_BLKCNT.
DIM may not be -1.
PROC is a scalar integer of default kind.
It must be a valid processor number or, if PROC = -1, the
value returned by F77_MY_PROCESSOR() is implied.