Texas Instruments Voyage 200 User Manual

Appendix A: Functions and Instructions 831
iPart() MATH/Number menu
iPart( number ) ⇒
⇒⇒
⇒ integer
iPart(
list1 ) ⇒
⇒⇒
⇒ list
iPart(
matrix1 ) ⇒
⇒⇒
⇒ matrix
Returns the integer part of the argument.
For lists and matrices, returns the integer part of
each element.
The argument can be a real or a complex number.
iPart(ë 1.234) ¸ ë 1.
iPart({3/2,ë 2.3,7.003})
¸
{1 ë 2. 7.}
isArchiv() CATALOG
isArchiv(var_name) ⇒
⇒⇒
⇒ true,false
Determines if var_name is archived or not.
Returns
true if var_name is archived. Returns
false if var_name is not archived.
isArchiv(PROG1) ¸ True
isClkOn() CATALOG
isClkOn() ⇒
⇒⇒
⇒ true,false
Determines if the clock is ON or OFF. Returns true
if the clock is ON. Returns false if the clock is OFF.
isLocked() CATALOG
isLocked(var_name) ⇒
⇒⇒
⇒ true,false
Determines if var_name is locked or not.
Returns
true if var_name is locked or archived.
Returns
false if var_name is not locked or
archived.
isLocked(PROG1) ¸ False
isPrime() MATH/Test menu
isPrime( number ) ⇒
⇒⇒
⇒ Boolean constant expression
Returns true or false to indicate if number is a
whole number ‚ 2 that is evenly divisible only by
itself and 1.
If
number exceeds about 306 digits and has no
factors  1021,
isPrime( number ) displays an
error message.
If you merely want to determine if
number is
prime, use
isPrime() instead of factor(). It is
much faster, particularly if
number is not prime
and has a second-largest factor that exceeds
about five digits.
IsPrime(5) ¸ true
IsPrime(6) ¸ false
Function to find the next prime after a specified
number:
Define nextPrim(n)=Func:Loop:
n+1! n:if isPrime(n):return n:
EndLoop:EndFunc ¸ Done
nextPrim(7) ¸ 11
isVar() CATALOG
isVar(var_name) ⇒
⇒⇒
⇒ true,false
Determines if var_name is in use. Returns true
if
var_name exists. Returns false if var_name
does not exist.
isArchiv(PROG1) ¸ True

Texas Instruments Voyage 200 Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Blue
Display resolution	128 x 240 pixels