cfdbr [->near/even]        -2147483648.500000	-> -2147483648	cc = 1
cfdbr [->0]                -2147483648.500000	-> -2147483648	cc = 1
cfdbr [->+inf]             -2147483648.500000	-> -2147483648	cc = 1
cfdbr [->-inf]             -2147483648.500000	-> -2147483648	cc = 3