ABS
#define ABS(x) ((x < 0) ? -(x) : (x))
#define ABS(a) (((a)>0)?(a):-(a))
#define ABS(_name_, _value_) \
#define ABS(type, val) \
#define ABS(a) ((a) < 0 ? -(a) : (a))
#define ABS(_name_, _value_) \
#define ABS(a) ((a) >= 0 ? (a) : -(a))
#define ABS(x) (((x) < 0) ? (-x) : (x))
#define ABS(a) ((a < 0) ? -a : a)
#define ABS(a) ((a) < 0 ? -(a) : (a))