Texas Instruments PLUS TI-89 - Manual (Page 508)

Appendix A: Functions and Instructions 491
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 491 of 132
Return CATALOG
Return [ expression ]
Returns expression as the result of the
function. Use within a Func ... EndFunc block,
or Prgm ... EndPrgm block.
Note : Use Return without an argument to
exit a program.
Note: Enter the text as one long line on the
Home screen (without line breaks).
Define factoral(nn)=Func
:local answer,count:1! answer
:For count,1,nn
:answerù count! answer:EndFor
:Return answer:EndFunc ¸ Done
factoral(3) ¸ 6
right() MATH/List menu
right( list1 [, num ]) ⇒ list
Returns the rightmost num elements
contained in list1 .
If you omit num , returns all of list1 .
right({1,3,л 2,4},3) ¸
{3 л 2 4}
right( sourceString [, num ]) ⇒ string
Returns the rightmost num characters
contained in character string sourceString .
If you omit num , returns all of sourceString .
right("Hello",2) ¸ "lo"
right( comparison ) ⇒
expression
Returns the right side of an equation or
inequality.
right(x<3) ¸ 3
rotate() MATH/Base menu
rotate( integer1[ , #ofRotations] ) ⇒
integer
Rotates the bits in a binary integer. You can
enter
integer1 in any number base; it is
converted automatically to a signed, 32-bit
binary form. If the magnitude of
integer1 is
too large for this form, a symmetric modulo
operation brings it within the range.
In Bin base mode:
rotate(0b1111010110000110101)
¸
0b10000000000000111101011000011010
rotate(256,1) ¸ 0b1000000000
If #of Rotations is positive, the rotation is to
the left. If #of Rotations is negative, the
rotation is to the right. The default is ë 1
(rotate right one bit).
For example, in a right rotation:
In Hex base mode:
rotate(0h78E) ¸ 0h3C7
rotate(0h78E,ë 2) ¸0h800001E3
rotate(0h78E,2) ¸ 0h1E38
0b00000000000001111010110000110101
produces:
0b10000000000000111101011000011010
The result is displayed according to the Base
mode.
Important: To enter a binary or
hexadecimal number, always use the 0b
or 0h prefix (zero, not the letter O).
Rightmost bit rotates to leftmost.
Each bit rotates right.