macro.h

#ifndef UTILS_MACRO_H
#define UTILS_MACRO_H
 
#define MSB(_x) ((_x) >> 8)
#define LSB(_x) ((_x)&0xFF)
 
#define WAIT_FOR(_cond)  \
    do {                 \
        while (!(_cond)) \
            /* wait */;  \
    } while (0)
 
#define INFINITE_LOOP() while (true)
 
#define BETWEEN(_x, _l, _h) ((_l) < (_x) && (_x) < (_h))
 
#define IN_RANGE(_x, _l, _h) ((_l) <= (_x) && (_x) <= (_h))
 
#define RANGES_OVERLAP(_start1, _end1, _start2, _end2) \
    ((_start1) <= (_end2) && (_end1) >= (_start2))
 
#define UNUSED(_x) (void)(_x);
 
#define ARRAY_SIZE(_arr) (sizeof(_arr) / sizeof(_arr[0]))
 
#define RETURN_CMP(_x, _y)                 \
    do {                                   \
        typeof((_x)) _tmp_x = (_x);        \
        typeof((_y)) _tmp_y = (_y);        \
        if (_tmp_x == _tmp_y)              \
            return 0;                      \
        return (_tmp_x < _tmp_y) ? -1 : 1; \
    } while (0);
 
#define CONCAT(_x, _y) _x##_y
#define CONCAT3(_x, _y, _z) _x##_y##_z
 
#define ALL_ONES (-1)
 
#define SWAP(_x, _y)            \
    do {                        \
        typeof((_x)) _tmp = _x; \
        _x = _y;                \
        _y = _tmp;              \
    } while (0)
 
#endif /* UTILS_MACRO_H */