From a167204782941dae63a3318a9c26bde040c7b049 Mon Sep 17 00:00:00 2001 From: hujianyang Date: Thu, 16 Oct 2014 20:02:09 +0800 Subject: mtd-utils: Add macros to include/common.h This patch adds four macros: ALIGN, __ALIGN_MASK, min_t and max_t to include/common.h. Signed-off-by: hujianyang --- include/common.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include/common.h') diff --git a/include/common.h b/include/common.h index 6895e5c..9b8804a 100644 --- a/include/common.h +++ b/include/common.h @@ -47,6 +47,21 @@ extern "C" { #define min(a, b) MIN(a, b) /* glue for linux kernel source */ #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) +#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1) +#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) + +#define min_t(t,x,y) ({ \ + typeof((x)) _x = (x); \ + typeof((y)) _y = (y); \ + (_x < _y) ? _x : _y; \ +}) + +#define max_t(t,x,y) ({ \ + typeof((x)) _x = (x); \ + typeof((y)) _y = (y); \ + (_x > _y) ? _x : _y; \ +}) + #ifndef O_CLOEXEC #define O_CLOEXEC 0 #endif -- cgit v1.2.3