526 #define Dblext_setzero(valA,valB,valC,valD)	\  argument
527     Dextallp1(valA) = 0; Dextallp2(valB) = 0;	\
536 #define Dblext_iszero(valA,valB,valC,valD) (Dextallp1(valA)==0 && \  argument
670 #define Dblext_leftshiftby8(valA,valB,valC,valD) \  argument
671     Shiftdouble(Dextallp1(valA),Dextallp2(valB),24,Dextallp1(valA)); \
675 #define Dblext_leftshiftby4(valA,valB,valC,valD) \  argument
676     Shiftdouble(Dextallp1(valA),Dextallp2(valB),28,Dextallp1(valA)); \
680 #define Dblext_leftshiftby3(valA,valB,valC,valD) \  argument
681     Shiftdouble(Dextallp1(valA),Dextallp2(valB),29,Dextallp1(valA)); \
685 #define Dblext_leftshiftby2(valA,valB,valC,valD) \  argument
686     Shiftdouble(Dextallp1(valA),Dextallp2(valB),30,Dextallp1(valA)); \
690 #define Dblext_leftshiftby1(valA,valB,valC,valD) \  argument
691     Shiftdouble(Dextallp1(valA),Dextallp2(valB),31,Dextallp1(valA)); \