Texas Instruments PLUS TI-89 - Manual (Page 470)

Appendix A: Functions and Instructions 453
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 453 of 132
getFold() CATALOG
getFold() ⇒ nameString
Returns the name of the current folder as a
string.
getFold() ¸ "main"
getFold()! oldfoldr ¸ "main"
oldfoldr ¸ "main"
getKey() CATALOG
getKey() ⇒ integer
Returns the key code of the key pressed.
Returns 0 if no key is pressed.
The prefix keys (shift ¤, second function
2, option ¥, alpha j, and drag ‚) are
not recognized by themselves; however, they
modify the keycodes of the key that follows
them. For example: ¥ Ù
ƒ Ù ƒ 2 Ù.
For a listing of key codes, see Appendix B.
Program listing:
:Disp
:Loop
: getKey()! key
: while key=0
: getKey()! key
: EndWhile
: Disp key
: If key = ord("a")
: Stop
:EndLoop
getMode () CATALOG
getMode( modeNameString ) ⇒
string
getMode("ALL " ) ⇒ ListStringPairs
If the argument is a specific mode name,
returns a string containing the current setting
for that mode.
If the argument is "ALL" , returns a list of
string pairs containing the settings of all the
modes. If you want to restore the mode
settings later, you must store the
getMode("ALL") result in a variable, and then
use setMode() to restore the modes.
For a listing of mode names and possible
settings, see
setMode() .
Note: To set or return information about the
Unit System mode, use setUnits() or getUnits()
instead of setMode() or getMode() .
getMode("angle") ¸ "RADIAN"
getMode("graph") ¸ "FUNCTION"
getMode("all") ¸
{"Graph" "FUNCTION"
"Display Digits" "FLOAT 6"
"Angle" "RADIAN"
"Exponential Format" "NORMAL"
"Complex Format" "REAL"
"Vector Format" "RECTANGULAR"
"Pretty Print" "ON"
"Split Screen" "FULL"
"Split 1 App" "Home"
"Split 2 App" "Graph"
"Number of Graphs" "1"
"Graph 2" "FUNCTION"
"Split Screen Ratio" "1,1"
"Exact/Approx" "AUTO"
"Base" "DEC"}
Note: Your screen may display different
mode settings.
getNum() MATH/Algebra/Extract menu
getNum( expression1 ) ⇒ expression
Transforms expression1 into one having a
reduced common denominator, and then
returns its numerator.
getNum((x+2)/(yì 3)) ¸ x + 2
getNum(2/7) ¸ 2
getNum(1/x+1/y) ¸ x + y