Reference Guide

3-102 Full Command and Function Reference
GROB 5 x 5 11A040A011 GXOR LASTARG GXOR »
turns on (makes dark) every pixel in PICT, then superimposes a 5 x 5 graphics object on PICT at
pixel coordinates { # 0d # 0d }. Each on-pixel in the 5 by 5 graphics object turns off (makes
light) the corresponding pixel in PICT. Then, the original picture is restored by executing GXOR
again with the same arguments.
See also: GOR, REPL, SUB
*H
Type: Command
Description: Multiply Height Command: Multiplies the vertical plot scale by x
factor
. *H is provided for
compatibility with the HP 48. *H is the same as SCALEH; see its listing for details.
HADAMARD
Type: Command
Description: Performs an element by element multiplication of two matrices (Hadamard product).
Access: Matrices, !Ø OPERATIONS L
Input: Level 2/Argument 1: Matrix 1.
Level 1/Argument 2: Matrix 2.
The matrices must have the same order.
Output: The matrix representing the result of the multiplication.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag –3 clear).
Example: Find the Hadamard product of the following two matrices:
3 1– 2
0 1 4
and
2 3 0
1 5 2
Command: HADAMARD([[3,-1,2][0,1,4]],[2,3,0][1,5,2]])
Result: [[6,-3,0][0,5,8]]
HALFTAN
Type: Command
Description: Transforms an expression by replacing sin(x), cos(x) and tan(x) subexpressions with tan(x/2)
terms.
Access: Trigonometry, …Ñor P TRIG
Input: An expression
Output: The transformed expression.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag –3 clear).
Radians mode must be set (flag –17 set).
See also: TAN2CS2, TAN2SC2
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.