* Right-rotate 32-bit value in &loc (DP or 16-bit address) by &n positions
	macro
	ROTR4	&loc,&n
	aif	&n>16,.dorotl
	lda	&loc+2
	lcla	&i
&i	seta	&n
.rotrloop
	lsr	a		;to set carry
	ror     &loc
	ror     &loc+2
&i	seta	&i-1
	aif	&i>0,.rotrloop
	ago	.end
.dorotl
	ROTL4	&loc,32-&n
.end
	mend

* Left-rotate 32-bit value in &loc (DP or 16-bit address) by &n positions
	macro
	ROTL4	&loc,&n
	aif	&n>16,.dorotr
        lda     &loc
	lcla	&i
&i	seta	&n
.rotlloop
        asl     a		;to set carry
        rol     &loc+2
        rol     &loc
&i	seta	&i-1
	aif	&i>0,.rotlloop
	ago	.end
.dorotr
	ROTR4	&loc,32-&n
.end
	mend

* &to := &from ROTR4 &n
	macro
	ROTR4MOVE &to,&from,&n
	aif	&n>16,.dorotl
        lda     &from
        sta     &to
        lda     &from+2
        sta     &to+2
	lcla	&i
&i	seta	&n
.rotrloop
	lsr	a		;to set carry
	ror     &to
	ror     &to+2
&i	seta	&i-1
	aif	&i>0,.rotrloop
	ago	.end
dorotl
	ROTL4MOVE &to,&from,32-&n
.end
	mend

* &to := &from ROTL4 &n
	macro
	ROTL4MOVE &to,&from,&n
	aif	&n>16,.dorotr
        lda     &from+2
        sta     &to+2
        lda     &from
        sta     &to
	lcla	&i
&i	seta	&n
.rotlloop
        asl     a		;to set carry
        rol     &to+2
        rol     &to
&i	seta	&i-1
	aif	&i>0,.rotlloop
	ago	.end
.dorotr
	ROTR4MOVE &to,&from,32-&n
.end
	mend