From: Alex Elder Date: Fri, 19 Apr 2013 20:34:50 +0000 (-0500) Subject: libceph: add signed type limits X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b587398a4ff6520753f9a58da294c80ee22443a5;p=linux-beck.git libceph: add signed type limits Flesh out the limits defined in to include the maximum and minimum values for signed type S8, S16, S32, and S64. Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h index 689f1df37bff..9575a52e011f 100644 --- a/include/linux/ceph/decode.h +++ b/include/linux/ceph/decode.h @@ -10,10 +10,20 @@ /* This seemed to be the easiest place to define these */ -#define U8_MAX ((u8) (~0U)) -#define U16_MAX ((u16) (~0U)) -#define U32_MAX ((u32) (~0U)) -#define U64_MAX ((u64) (~0ULL)) +#define U8_MAX ((u8)(~0U)) +#define U16_MAX ((u16)(~0U)) +#define U32_MAX ((u32)(~0U)) +#define U64_MAX ((u64)(~0ULL)) + +#define S8_MAX ((s8)(U8_MAX >> 1)) +#define S16_MAX ((s16)(U16_MAX >> 1)) +#define S32_MAX ((s32)(U32_MAX >> 1)) +#define S64_MAX ((s64)(U64_MAX >> 1LL)) + +#define S8_MIN ((s8)(-S8_MAX - 1)) +#define S16_MIN ((s16)(-S16_MAX - 1)) +#define S32_MIN ((s32)(-S32_MAX - 1)) +#define S64_MIN ((s64)(-S64_MAX - 1LL)) /* * in all cases,