Messages in this thread Patch in this message | | | From | Kamal Mostafa <> | Subject | [PATCH 3.8 01/81] kernel.h: define u8, s8, u32, etc. limits | Date | Tue, 25 Mar 2014 10:15:14 -0700 |
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3.8.13.20 -stable review patch. If anyone has any objections, please let me know.
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From: Alex Elder <alex.elder@linaro.org>
commit 89a0714106aac7309c7dfa0f004b39e1e89d2942 upstream.
Create constants that define the maximum and minimum values representable by the kernel types u8, s8, u16, s16, and so on.
Signed-off-by: Alex Elder <elder@linaro.org> Cc: Sage Weil <sage@inktank.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> [ kamal: 3.8 stable for backport convenience ] Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- include/linux/kernel.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index c566927..8a7a12b 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -29,6 +29,19 @@ #define ULLONG_MAX (~0ULL) #define SIZE_MAX (~(size_t)0) +#define U8_MAX ((u8)~0U) +#define S8_MAX ((s8)(U8_MAX>>1)) +#define S8_MIN ((s8)(-S8_MAX - 1)) +#define U16_MAX ((u16)~0U) +#define S16_MAX ((s16)(U16_MAX>>1)) +#define S16_MIN ((s16)(-S16_MAX - 1)) +#define U32_MAX ((u32)~0U) +#define S32_MAX ((s32)(U32_MAX>>1)) +#define S32_MIN ((s32)(-S32_MAX - 1)) +#define U64_MAX ((u64)~0ULL) +#define S64_MAX ((s64)(U64_MAX>>1)) +#define S64_MIN ((s64)(-S64_MAX - 1)) + #define STACK_MAGIC 0xdeadbeef #define REPEAT_BYTE(x) ((~0ul / 0xff) * (x)) -- 1.8.3.2
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