| From 89a0714106aac7309c7dfa0f004b39e1e89d2942 Mon Sep 17 00:00:00 2001 |
| From: Alex Elder <alex.elder@linaro.org> |
| Date: Thu, 23 Jan 2014 15:54:00 -0800 |
| Subject: kernel.h: define u8, s8, u32, etc. limits |
| |
| 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> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| include/linux/kernel.h | 13 +++++++++++++ |
| 1 file changed, 13 insertions(+) |
| |
| --- 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)) |
