14 /* amount is assumed to be a constant between 0 and 32 (non-inclusive) */
15 #define Shiftdouble(left,right,amount,dest)			\  argument
16     /* int left, right, amount, dest; */			\
17     dest = ((left) << (32-(amount))) | ((unsigned int)(right) >> (amount))
19 /* amount must be less than 32 */
20 #define Variableshiftdouble(left,right,amount,dest)		\  argument
21     /* unsigned int left, right;  int amount, dest; */		\
22     if (amount == 0) dest = right;				\
23     else dest = ((((unsigned) left)&0x7fffffff) << (32-(amount))) |	\
24           ((unsigned) right >> (amount))
26 /* amount must be between 0 and 32 (non-inclusive) */
27 #define Variable_shift_double(left,right,amount,dest)		\  argument
28     /* unsigned int left, right;  int amount, dest; */		\
29     dest = (left << (32-(amount))) | ((unsigned) right >> (amount))