526 #define Dblext_setzero(valA,valB,valC,valD)	\  argument
528     Dextallp3(valC) = 0; Dextallp4(valD) = 0
531 #define Dblext_isnotzero_mantissap3(valC) (Dextallp3(valC)!=0)  argument
536 #define Dblext_iszero(valA,valB,valC,valD) (Dextallp1(valA)==0 && \  argument
537     Dextallp2(valB)==0 && Dextallp3(valC)==0 && Dextallp4(valD)==0)
670 #define Dblext_leftshiftby8(valA,valB,valC,valD) \  argument
672     Shiftdouble(Dextallp2(valB),Dextallp3(valC),24,Dextallp2(valB)); \
673     Shiftdouble(Dextallp3(valC),Dextallp4(valD),24,Dextallp3(valC)); \
675 #define Dblext_leftshiftby4(valA,valB,valC,valD) \  argument
677     Shiftdouble(Dextallp2(valB),Dextallp3(valC),28,Dextallp2(valB)); \
678     Shiftdouble(Dextallp3(valC),Dextallp4(valD),28,Dextallp3(valC)); \
680 #define Dblext_leftshiftby3(valA,valB,valC,valD) \  argument
682     Shiftdouble(Dextallp2(valB),Dextallp3(valC),29,Dextallp2(valB)); \
683     Shiftdouble(Dextallp3(valC),Dextallp4(valD),29,Dextallp3(valC)); \
685 #define Dblext_leftshiftby2(valA,valB,valC,valD) \  argument
687     Shiftdouble(Dextallp2(valB),Dextallp3(valC),30,Dextallp2(valB)); \
688     Shiftdouble(Dextallp3(valC),Dextallp4(valD),30,Dextallp3(valC)); \
690 #define Dblext_leftshiftby1(valA,valB,valC,valD) \  argument
692     Shiftdouble(Dextallp2(valB),Dextallp3(valC),31,Dextallp2(valB)); \
693     Shiftdouble(Dextallp3(valC),Dextallp4(valD),31,Dextallp3(valC)); \