23 #define __typecheck(x, y) \  argument
24 	(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
83 #define __cmp(op, x, y)	((x) __cmp_op_##op (y) ? (x) : (y))  argument
85 #define __cmp_once_unique(op, type, x, y, ux, uy) \  argument
86 	({ type ux = (x); type uy = (y); __cmp(op, ux, uy); })
88 #define __cmp_once(op, type, x, y) \  argument
89 	__cmp_once_unique(op, type, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
91 #define __careful_cmp_once(op, x, y, ux, uy) ({		\  argument
92 	__auto_type ux = (x); __auto_type uy = (y);	\
94 		#op"("#x", "#y") signedness error");	\
97 #define __careful_cmp(op, x, y) \  argument
98 	__careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
105 #define min(x, y)	__careful_cmp(min, x, y)  argument
112 #define max(x, y)	__careful_cmp(max, x, y)  argument
120 #define umin(x, y)	\  argument
121 	__careful_cmp(min, (x) + 0u + 0ul + 0ull, (y) + 0u + 0ul + 0ull)
128 #define umax(x, y)	\  argument
129 	__careful_cmp(max, (x) + 0u + 0ul + 0ull, (y) + 0u + 0ul + 0ull)
131 #define __careful_op3(op, x, y, z, ux, uy, uz) ({			\  argument
132 	__auto_type ux = (x); __auto_type uy = (y);__auto_type uz = (z);\
134 		#op"3("#x", "#y", "#z") signedness error");		\
143 #define min3(x, y, z) \  argument
144 	__careful_op3(min, x, y, z, __UNIQUE_ID(x_), __UNIQUE_ID(y_), __UNIQUE_ID(z_))
152 #define max3(x, y, z) \  argument
153 	__careful_op3(max, x, y, z, __UNIQUE_ID(x_), __UNIQUE_ID(y_), __UNIQUE_ID(z_))
161 #define min_t(type, x, y) __cmp_once(min, type, x, y)  argument
169 #define max_t(type, x, y) __cmp_once(max, type, x, y)  argument
176 #define min_not_zero(x, y) ({			\  argument
178 	typeof(y) __y = (y);			\