Texas Instruments TI-89 Manual Book page 473

4Hex
MATH/Base menu
integer1 4Hex
Converts
Binary or hexadecimal numbers always have
a 0b or 0h prefix, respectively.
Zero, not the letter O, followed by b or h.
0b binaryNumber
0h hexadecimalNumber
Without a prefix,
decimal (base 10). The result is displayed in
hexadecimal, regardless of the
If you enter a decimal integer that is too large
for a signed, 32-bit binary form, a symmetric
modulo operation is used to bring the value
into the appropriate range.
identity()
MATH/Matrix menu
identity(expression)
Returns the identity matrix with a dimension
of
expression
expression
If
CATALOG
If Boolean expression
statement
If
Boolean expression
executes the single statement
block of statements block before continuing
execution.
If
Boolean expression
continues execution without executing the
statement or block of statements.
can be either a single statement or a
block
sequence of statements separated with the ":"
character.
If Boolean expression Then
block1
Else
block2
EndIf
If
Boolean expression
executes
If
Boolean expression
but executes
block1
and
block1
456 Appendix A: Functions and Instructions
integer
to a hexadecimal number.
integer1
A binary number can have up to
32 digits. A hexadecimal number
can have up to 8.
is treated as
integer1
Base
matrix
.
must evaluate to a positive integer.
If Boolean expression Then
block
EndIf
evaluates to true,
statement
evaluates to false,
evaluates to true,
and then skips
block1 block2
evaluates to false, skips
.
block2
can be a single statement.
block2
256 4Hex ¸
0b111100001111 4Hex ¸
mode.
identity(4) ¸
Program segment:
©
:If x<0
:Disp "x is negative"
©
or the
—or—
©
:If x<0 Then
: Disp "x is negative"
: abs(x)! x
:EndIf
©
Program segment:
©
:If x<0 Then
: Disp "x is negative"
: Else
: Disp "x is positive or zero"
:EndIf
.
©
0h100
0hF0F
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1