HP 48GII

Full Command and Function Reference 3-75
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
GROB
1
GROB
2
→
GROB
3
GXOR
Type: Command
Description: Graphics Exclusive OR Command: Superimposes grob
1
onto grob
target
or PICT, with the upper left
corner pixel of grob
1
positioned at the specified coordinate in grob
target
or PICT.
GXOR is used for creating cursors, for example, to make the cursor image appear dark on a light
background and light on a dark background. Executing GXOR again with the same image
restores the original picture.
GXOR uses a logical exclusive OR to determine the state of the pixels (on or off) in the
overlapping portion of the argument graphics objects.
Any portion of grob
1
that extends past grob
target
or PICT is truncated.
If the first (level 3) argument (the target graphics object) is any graphics object other than PICT,
then grob
result
is returned to the stack. If the first (level 3) argument is PICT, no result is returned
to the stack.
Access: !°L
GROB GXOR ( °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
g
ro
b
target
{
#n
,
#m
}
g
ro
b
1
→
g
ro
b
result
g
ro
b
target
(
x,
y)
g
ro
b
1
→
g
ro
b
result
PICT
{
#n
,
#m
}
g
ro
b
1
→
PICT
(
x,
y)
g
ro
b
1
→
See also: GOR, REPL, SUB
HADAMARD
CAS: Perform an element by element multiplication of two matrices (Hadamard product).
HALFTAN
CAS: Transform an expression by replacing sin(x), cos(x) and tan(x) subexpressions with tan(x/2).
HALT
Type: Command
Description: Halt Program Command: Halts program execution.
Program execution is halted at the location of the HALT command in the program. The HLT
annunciator is turned on. Program execution is resumed by executing CONT (that is, by pressing
!æ). Executing KILL cancels all halted programs.
Access: !°LL
RUN & DEBUG HALT ( °is the left-shift of the Nkey).
Input/Output: None
See also: CONT, KILL
HEAD
Type: Command
Description: First Listed Element Command: Returns the first element of a list or string.