* floatformat.c (floatformat_i387_ext_is_valid): Use explicit cast

        to convert from "from".
        (floatformat_to_double): Likewise.
        (floatformat_from_double): Use explicit cast to convert from "to".


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@108717 138bc75d-0d04-0410-961f-82ee72b054a4