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#ifndef _COMMON_H
#define _COMMON_H
#define __round_mask(x, y) ((__typeof__(x))((y)-1))
#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#define min(x, y) ((x) > (y) ? (y) : (x))
#define max(x, y) ((x) > (y) ? (x) : (y))
#define __stringify_1(x...) #x
#define __stringify(x...) __stringify_1(x)
#endif
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