HP HP-35 - Evaluation Algorithm

34
AN A LGOR ITH M
The flow charI shown below allows you 10 evaluate an y
e ~ pression on a calculator. like your HP·35, Ihat u<;es an
operatIonal stack and LukasiewIcz notation. AlthoultJ
the general solution requIres an operational stack of un·
limitoo length, the lour regIster stack in your HP-35 IS
adequate lor most practical problems. Belore using the
al90rithm, Wfite your expression in serial lorm i.e .. write
it as if it were to be sent over the teletype. All e xp ressions
can
be Wfinen in serial l orm . For e",~mple :
•
2
3 + 1/2 beco mes 2/13 + 1/2).
nUT
U"'OU
.(R.O"M .... " TWO
•
/
...
,
~ ..
* Y ou may omI t this step if you've done any o peratio n
on
the last num ber en t erOO .
• One
numbe r (Monadic) ope rations are thin gs like
fiiJ m .etc .
.. Two number (Diadic) ope ra ll ons are things like D
CI £I 1::1