Reference Guide

3-134 Full Command and Function Reference
Input/Output:
Level
n+1
/Argument
1
Level
2
/Argument
n
Level
1
/Argument
n+1
Level 1/Item 1
obj
1
… obj
n
n
→
{ obj
1
, … ,obj
n
}
Example: The program « DEPTH →LIST 'A' STO » combines the entire contents of the stack
into a list that is stored in variable A.
See also: →ARRY, LIST→, →STR, →TAG, →UNIT
∆ LIST
Type: Command
Description: List Differences Command: Returns the first differences of the elements in a list.
Adjacent elements in the list must be suitable for mutual subtraction.
Access: !´ LIST ∆ LIST ( ´ is the left-shift of the Pkey).
Input/Output:
Level 1/Argument 1 Level 1/Item 1
{ list }
→
{ differences }
Example 1: { 4 20 1 17 60 91 } ›LIST returns { 16 -19 16 43 31 } .
Example 2: { A B C 1 2 3 } ›LIST returns { 'B-A' 'C-B' '1-C' 1 1 } .
Example 3: { 'A+3' 'X/5' 'Y^4' } ›LIST returns { 'X/5-(A+3)' 'Y^4-X/5' } .
See also: ΣLIST, ΠLIST, STREAM
Π
ΠΠ
ΠLIST
Type: Command
Description: List Product Command: Returns the product of the elements in a list.
The elements in the list must be suitable for mutual multiplication.
Access: !´ LIST Π LIST ( ´ is the left-shift of the Pkey).
Input/Output:
Level 1/Argument 1 Level 1/Item 1
{ list }
→
product
Example 1: { 5 8 2 } œLIST returns 80 .
Example 2: { A B C 1 } œLIST returns 'A*B*C' .
See also: ΣLIST, ∆LIST, STREAM
ΣLIST
Type: Command
Description: List Sum Command: Returns the sum of the elements in a list.
The elements in the list must be suitable for mutual addition.
Access: !´ LIST Σ LIST ( ´ is the left-shift of the Pkey).
Input/Output:
Level 1/Argument 1 Level 1/Item 1
{ list }
→
sum
Example 1: { 5 8 2 } ΣLIST returns 15 .
Example 2: { A B C 1 } ΣLIST returns 'A+B+C+1' .
See also: ΠLIST, ∆LIST, STREAM
LN
Type: Analytic function
Description: Natural Logarithm Analytic Function: Returns the natural (base e) logarithm of the argument.