NonStop S-Series Server Description Manual (G06.24+)

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TNS Instruction Set Definition

HP NonStop S-Series Server Description Manual—520331-003

C-28

Instruction Definitions

0 0 0 3 1 2 CFD convert floating to double

V := 0;

t:=31+256-exponent(A);

sign:=B.<0>;

if -2**31 <= BA <= 2**31-1

then {B.<0>:=1;

exponent(A):=0;

BA:=BA'>>'t;

if sign=1 then

BA:=-BA}

else V:=1;

cc(BA)

0 0 0 3 1 3 CFDR convert floating to double with rounding

V := 0;

t:=31+256-exponent(A);

sign:=B.<0>;

if -2**31 <= BA <= 2**31-1

then {B.<0>:=1;

exponent(A):=0;

BAs:=BAs'>>'t;

BAs:=BAs'+'%100000;

if sign=1 then

BA:=-BA

else if B.<0>=1 then

V:=1}

else V:=1;

cc(BA)

0 0 0 3 1 4 CED convert extended to double

V := 0;

t:=31+256-exponent(A);

sign:=D.<0>;

if -2**31 <= DCBA <= 2**31-1

then {D.<0>:=1;

DC:=DC'>>'t;

if sign=1 then

DC:=-DC}

else V:=1;

cc(DC); RP:=RP-2

0 0 0 3 1 5 CEDR convert extended to double with rounding

V := 0;

t:=31+256-exponent(A);

sign:=D.<0>;

if -2**31 <= DCBA <= 2**31-1

then {D.<0>:=1;

DCB:=(DCB'>>'t) '+' %100000;

if sign=1 then

DC:=-DC

else if D.<0>=1 then V:=1}

else V:=1;

cc(DC); RP:=RP-2

Table C-2. Instruction Definitions (page18of38)