Casio CFX-9800G - Page 47

mStacks cae : i L
The unit employs memory blocks, called stacks, for storage of low priority values and
commands. There is a 10-level numeric value stack, a 26-level command stack, arid'a
10-level program subroutine stack. If you execute a formula so complex it exceeds:the
amount of stack space available, an error meSsage appears on the display (Stk ERROR
during calculations or Ne ERROR during execution of a program subroutine).
Stk. ERROR
Bytes 26
Example
|.
2:«
((3+4
(544)
#3y#
5)
+82
"oo
ers
SUEY
Numeric. Value‘ Stack
Command Stack
® | 2: 2} @ |..x
@/3 2) | ¢
@®|4 3] | ¢
@|5 @i +i
@|4 B) | x |
i | ¢
[am + |
*Calculations are performed according to the priority sequence described on page 56.
Once a calculation is executed, it is cleared from the stack.
Storing a complex number takes up two numeric value stack levels.
Storing a two-byte function (page 59) takes up two command stack levels.
Value Input and Output Limitations
The allowable range for both input and output values is 10 digits for the mantissa and
2 digits for the exponent. Internally, however, the unit performs calculations using 15 digits
for the mantissa and 2 digits for the exponent.
Example| 3 x 105+ 7-42857=
{sc [ES) EG] Ee3) = jira) a
ESECIES| — [eal — ESPANA Eales
—58-—
*Calculation results:that are greater than.10!° (10 billion) or:tess than 10-2. (0. 01)"are
automatically displayed in: exponential: form. “
*Values are stored in memory with 15 digits for ihe mantissa and 2 digits for the exporient.
Minput:Capacity. 2 :
This unit has'a 127-byte area foie execution of calculations. Each time’ you press anumeric
key or arithmetic operation key, 61 é Sn addition, the’ following
functions take up two bytes éach? ‘ , she
ed/dx(, X (
«Mat, Det, Trn (in the MAT Mode)
**xROW, *ROW+, ROW+, Swap (in the PRGM-MAT Mode) .
*Y, 1, Xt, Yt, Sim X, Sim Y, Sim Z, Sim T, Sim U, Sim v, Sim -Coef, Ply Xj, Ply Xa,
Ply Xa, Ply. Coef {in the VAR. Mode) _
*Xmin, xmax, Xsel;, it oy aX, Ysel, Tamin, Témax, Toptch, Xfet, Vict, bTx, DTy,
OT# (in the VAR’ Moc
¢F Result, F Start, F End, F Pitch, R Result, R Start,’ R, End, R Pitch, List xX, List Y
{in the VAR Mode)
*i, Arg, Conjg, ReP, ImP, (in the CMPLX Mode)
Gin Any ty Fne2s Ms My Gi Me (in the TABLE-RECR Mo e)
*Orange, Green-(in the COLOR Mode)
aa
A calculation 'can consist of up to 127 bytes. Whenever you input thé 121st byte-of any
calculation, the cursor changes from "__” to “lll’” on the display to let you know. that
you are running out of memory: If you ‘till néed to inpt:more, you should divide: your
calculation into two or more parts.
Note
*As you input numeric values or commands, they.appear flush left on the display.
Calculation results, on the other, hand, are ‘aleplayed flush sright: =
WOverfiow and Errors
Exceeding a specified input or.calculation range, or attempting an illegal input causes
an error message to appear on the display. Further operation of the calculator is impossi-
ble while an error message is displayed. The parce events cause an error message
to appear on.the display..
When any result, whether intermediate or final, ‘or any value in | memory exceeds
++ 9.999999999 x 10° (Ma ERROR)
When an attempt is made to perform a function calculation that
(Ma ERROR) (see page 361)
When an illegal operation is attempted. during statistical cal ildtions (Ma ERROR)
For example, attempting to obtain ¥ or_xon witholt data input.
«When the capacity of the numeric value stack or command stack is exceeded (Stk ERROR)
For exampie, entering 25 successive (Q), followed. by 28339469.
*When an attempt is made to perform a calculation using an-illegal formula (Syn ERROR)
For example, SE3E33f).
When an illegal memory specification is made (Mem ERROR)
eds the input a
—59~-