Texas Instruments Voyage 200, Руководство пользователя

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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