xt_macro.h

浏览该文件的文档.

 
#ifndef __XT_MACRO_H__
#define __XT_MACRO_H__
 
/* ==================== [Includes] ========================================== */
 
#include <stddef.h>
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif

 
/* ==================== [Defines] =========================================== */
 
#define XT_STATIC_ASSERT(const_expression)           extern char (*O_o(char static_assertion_failure[1 - 2 * !(const_expression)]))
#define XT_STATIC_ASSERT_MSG(const_expression, msg)  extern char (*O_o(char static_assertion_failure[1 - 2 * !(const_expression)]))
 
#define XT_ARRAY_SIZE(arr)               (sizeof(arr) / sizeof((arr)[0]))
#define XT_UNUSED(x)                     (void)(x)
 
#define XT_OFFSETOF(type, member)        ((size_t)&((type *)0)->member)
#define XT_CONTAINER_OF(ptr, type, member)    ((type *)((char *)(ptr) - XT_OFFSETOF(type, member)))
 
#define XT_ABS(x)                        ((x) < 0 ? -(x) : (x))
#define XT_MAX(x, y)                     ((x) > (y) ? (x) : (y))
#define XT_MIN(x, y)                     ((x) < (y) ? (x) : (y))
#define XT_DIV_ROUND_UP(n, d)            (((n) + (d) - 1) / (d))
#define XT_DIV_ROUND_DOWN(n, d)          ((n) / (d))
#define XT_IN_RANGE(val, min, max)       ((min) <= (val) && (val) <= (max))
 
#define __XT_ALIGN_MASK(x, mask)         (((x) + (mask)) & ~(mask))
#define XT_ALIGN(x, num_pow_of_2)        __XT_ALIGN_MASK(x, (num_pow_of_2) - 1)
#define XT_ALIGN_DOWN(x, num_pow_of_2)   XT_ALIGN((x) - ((num_pow_of_2) - 1), (num_pow_of_2))
#define XT_PTR_ALIGN(p, num_pow_of_2)    XT_ALIGN((uintptr_t)(p), (num_pow_of_2))
#define XT_IS_ALIGNED(x, num_pow_of_2)   (((x) & ((num_pow_of_2) - 1)) == 0)
 
#define XT_IS_POWER_OF_TWO(x)            (((x) != 0) && ((((x) - 1) & (x)) == 0))
 
/* ==================== [Typedefs] ========================================== */
 
/* ==================== [Global Prototypes] ================================= */
 
/* ==================== [Macros] ============================================ */
  /* xt_macro */
 
#ifdef __cplusplus
} /* extern "C" */
#endif
 
#endif /* __XT_MACRO_H__ */