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— End-off shift function  EOSHIFT(ARRAY, SHIFT[,BOUNDARY, DIM])
performs an end-off shift on elements of ARRAY along the
dimension of DIM. If DIM is omitted it is taken to be 1. DIM is
a scaler of type INTEGER in the range of 1 /leq DIM /leq n)
where n is the rank of ARRAY. If the rank of ARRAY is one, then
all elements of ARRAY are shifted by SHIFT places. If rank is
greater than one, then all complete rank one sections of ARRAY
along the given dimension are shifted. Elements shifted out one
end of each rank one section are dropped. If BOUNDARY is present
then the corresponding value of from BOUNDARY is copied back in
the other end. If BOUNDARY is not present then the following are
copied in depending on the type of ARRAY.  Array Type Boundary
Value Numeric 0 of the type and kind of ARRAY. Logical .FALSE..
Character(len) len blanks.  f95, gnu transformational function
ARRAY May be any type, not scaler. SHIFT The type shall be
INTEGER. BOUNDARY