command ENDSUB. Both of these commands return an Undefined Local Name error if executed when DOSUBS is not active.

DOSUBS returns the Invalid User Function error if the object at level 1/argument 3 is a user program that does not contain only one command and does not have a user-defined function structure. DOSUBS also returns the Wrong Argument Count error if the object at level 1/argument 3 is a command that does not accept 1 to 5 arguments of specific types (DUP, ROT, or →LIST, for example).

Access:

!°LIST PROCEDURES DOSUBS ( °is the left-shift of the Nkey).

 

Input/Output:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Level 3/Argument 1

Level 2/Argument 2

Level 1/Argument 3

 

Level 1/Item 1

 

 

 

 

 

 

 

 

 

{ list }1

n

« program »

→

{ list }2

 

 

{ list }1

n

command

→

{ list }2

 

 

{ list }1

n

name

→

{ list }2

 

 

 

{ list }1

« program »

→

{ list }2

 

 

 

{ list }1

command

→

{ list }2

 

 

 

{ list }1

name

→

{ list }2

 

{ A B C

 

 

 

 

Example 1:

D E } « - » DOSUBS returns

 

 

 

 

{ 'A-B' 'B-C' 'C-D' 'D-E' }.

 

 

 

Example 2:

{ A B C } 2 « DUP * * » DOSUBS returns

 

 

 

{ 'A*(B*B)' 'B*(C*C)' }.

 

 

 

Example 3:

Entering

 

 

 

 

{1 2 3 4 5 } « → a b

«CASE 'NSUB==1' THEN a END 'NSUB==ENDSUB' THEN b END

'a+b' EVAL END » » DOSUBS returns { 1 5 7 5 }.

See also: DOLIST, ENDSUB, NSUB, STREAM

DOT

Type: Command

Description: Dot Product Command: Returns the dot product A•B of two arrays A and B, calculated as the sum of the products of the corresponding elements of the two arrays.

Both arrays must have the same dimensions.

Some authorities define the dot product of two complex arrays as the sum of the products of the conjugated elements of one array with their corresponding elements from the other array. The calculator uses the ordinary products without conjugation. If you prefer the alternative definition, apply CONJ to one array before using DOT.

Access:

!Ø LVECTOR DOT

( Ø is the left-shift of the 5key).

 

!´VECTOR DOT

( ´is the left-shift of the Pkey).

Input/Output:

 

 

 

 

 

 

 

 

 

 

 

 

 

Level 2/Argument 1

Level 1/Argument 2

 

Level 1/Item 1

 

 

 

 

 

 

 

 

[ array A ]

[ array B ]

→

x

 

 

 

Example:

[ 1 2 3 ][ 4 5 6 ] DOT returns 32 (by calculating 1 x 4 + 2 x 5 + 3 x 6).

See also:

CNRM, CROSS, DET, RNRM

 

 

 

 

 

 

 

 

 

Full Command and Function Reference 3-67