421 #define Dbl_xortointp1(left,right,result)			\  argument
422     result = Dallp1(left) XOR Dallp1(right)
424 #define Dbl_xorfromintp1(left,right,result)			\  argument
425     Dallp1(result) = left XOR Dallp1(right)
427 #define Dbl_swap_lower(left,right)				\  argument
428     Dallp2(left)  = Dallp2(left) XOR Dallp2(right);		\
429     Dallp2(right) = Dallp2(left) XOR Dallp2(right);		\
430     Dallp2(left)  = Dallp2(left) XOR Dallp2(right)
720 #define Dblext_xortointp1(left,right,result) Dbl_xortointp1(left,right,result)  argument
722 #define Dblext_xorfromintp1(left,right,result) \  argument
723 	Dbl_xorfromintp1(left,right,result)