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    SubjectRe: [PATCH -mm] Introduce U16_MAX and U32_MAX

    On Jul 31 2007 11:57, Andrew Morton wrote:
    >> --- a/include/linux/kernel.h
    >> +++ b/include/linux/kernel.h
    >> @@ -30,6 +30,9 @@ extern const char linux_proc_banner[];
    >> #define LLONG_MIN (-LLONG_MAX - 1)
    >> #define ULLONG_MAX (~0ULL)
    >>
    >> +#define U16_MAX ((u16) ~0U)
    >> +#define U32_MAX ((u32) ~0U)
    >> +
    >
    >hm, I'd have thought that there's a risk of gcc warnings here, forcing
    >0xffffffff into a u16, but apparently not.

    No, since it is casted (= explicitly truncated).


    Jan
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