Quite an unexpected result with binary_float...

DECLARE

    lc_number   NUMBER         := 0;

    lc_binfloat BINARY_FLOAT   := 0;

    lc_binint   BINARY_INTEGER := 0;

BEGIN

    DBMS_OUTPUT.PUT_LINE(SIGN(0));

    DBMS_OUTPUT.PUT_LINE(SIGN(lc_number));

    DBMS_OUTPUT.PUT_LINE(SIGN(lc_binfloat));

    DBMS_OUTPUT.PUT_LINE(SIGN(lc_binint));   

END;

Output on 11.2.0.4 (64 bit) and 10.2.0.1 (32 bit) on Windows:

0

0

1

0

Uhm..... I guess 0 is not really really zero, but lc_binfloat = 0 it's true.

Should I file a bug? How?