begin comment 'LIBRARY' 1; real X, Y; integer CASE; procedure CHECK(B); value B; boolean B; if B then CASE ≔ CASE + 1 else begin OUTREAL(99, X); OUTREAL(99, Y); OUTREAL(99, CASE) end; CASE ≔ 0; for X ≔ - 6·8,·001, 13·4 do for Y ≔ - 6·8,·001, 13·4 do begin if X = Y then CHECK(X ⩽ Y ∨ X ⩾ Y) else if X > Y then CHECK(X ⩾ Y) else if X < Y then CHECK(X ⩽ Y) else CHECK(false) end; OUTREAL(99, CASE); end