common_util.h

#ifndef CODEBASE_COMMON_UTIL_H_
#define CODEBASE_COMMON_UTIL_H_

#define MIN(a, b) ((a) < (b) ? (a) : (b))

#define MAX(a, b) ((a) < (b) ? (b) : (a))

#define CONCAT_2(p1, p2)      CONCAT_2_(p1, p2)

#define CONCAT_2_(p1, p2)     p1##p2

#define CONCAT_3(p1, p2, p3)  CONCAT_3_(p1, p2, p3)

#define CONCAT_3_(p1, p2, p3) p1##p2##p3

#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))

#define ROUNDED_DIV(A, B) (((A) + ((B) / 2)) / (B))

#define CEIL_DIV(A, B)      \
    (((A) + (B) - 1) / (B))

#define IS_POWER_OF_TWO(A) ( ((A) != 0) && ((((A) - 1) & (A)) == 0) )

enum
{
    UNIT_0_625_MS = 625,  
    UNIT_1_25_MS  = 1250, 
    UNIT_10_MS    = 10000 
};

#define MSEC_TO_UNITS(TIME, RESOLUTION) (((TIME) * 1000) / (RESOLUTION))

#define SET_BIT_VAR(VAR, BIT_NO)    (VAR | (1 << BIT_NO))

#define CLR_BIT_VAR(VAR, BIT_NO)    (VAR & ~(1 << BIT_NO))

#endif /* CODEBASE_COMMON_UTIL_H_ */