XCALC

−rpn

This option indicates that Reverse Polish Notation should be used. In this mode the calculator will look and behave like an HP-10C. Without this flag, it will emulate a TI-30.

1/x

Replaces the number in the display with its reciprocal. The corresponding action procedure is reciprocal().

x^2

Squares the number in the display. The corresponding action procedure is square().

SQRT

Takes the square root of the number in the display. The corresponding action procedure is squareRoot().

CE/C

When pressed once, clears the number in the display without clearing the state of the machine. Allows you to re-enter a number if you make a mistake. Pressing it twice clears the state, also. The corresponding action procedure for TI mode is clear().

AC

Clears the display, the state, and the memory. Pressing it with the third pointer button turns off the calculator, in that it exits the program. The action procedure to clear the state is off(); to quit, quit().

INV

Invert function. See the individual function keys for details. The corresponding action procedure is inverse().

sin

Computes the sine of the number in the display, as interpreted by the current DRG mode (see DRG, below). If inverted, it computes the arcsine. The corresponding action procedure is sine().

cos

Computes the cosine, or arccosine when inverted. The corresponding action procedure is cosine().

tan

Computes the tangent, or arctangent when inverted. The corresponding action procedure is tangent().

DRG

Changes the DRG mode, as indicated by ’DEG’, ’RAD’, or ’GRAD’ at the bottom of of the calculator ‘‘liquid crystal’’ display. When in ’DEG’ mode, numbers in the display are taken as being degrees. In ’RAD’ mode, numbers are in radians, and in ’GRAD’ mode, numbers are in grads. When inverted, the DRG key has a feature of converting degrees to radians to grads and vice-versa. Example: put the calculator into ’DEG’ mode, and enter "45 INV DRG". The display should now show something along the lines of ".785398", which is 45 degrees converted to radians. The corresponding action procedure is degree().

e

The constant ’e’. (2.7182818...). The corresponding action procedure is e().

EE

Used for entering exponential numbers. For example, to get "-2.3E-4" you’d enter "2 . 3 +/- EE 4 +/-". The corresponding action procedure is scientific().

log

Calculates the log (base 10) of the number in the display. When inverted, it raises "10.0" to the number in the display. For example, entering "3 INV log" should result in "1000". The corresponding action procedure is logarithm().

ln

Calculates the log (base e) of the number in the display. When inverted, it raises "e" to the number in the display. For example, entering "e ln" should result in "1". The corresponding action procedure is naturalLog().

y^x

Raises the number on the left to the power of the number on the right. For example "2 y^x 3 =" results in "8", which is 2^3. For a further example, "(1+2+3) y^x (1+2) =" equals "6 y^x 3" which equals "216". The corresponding action procedure is power().

PI

The constant ’pi’. (3.1415927....) The corresponding action procedure is pi().

x!

Computes the factorial of the number in the display. The number in the display must be an integer in the range 0-500, though, depending on your math library, it might overflow long before that. The corresponding action procedure is factorial().

(

Left parenthesis. The corresponding action procedure for TI calculators is leftParen().

)

Right parenthesis. The corresponding action procedure for TI calculators is rightParen().

/

Division. The corresponding action procedure is divide().

*

Multiplication. The corresponding action procedure is multiply().

-

Subtraction. The corresponding action procedure is subtract().

+

Addition. The corresponding action procedure is add().

=

Perform calculation. The TI-specific action procedure is equal().

STO

Copies the number in the display to the memory location. The corresponding action procedure is store().

RCL

Copies the number from the memory location to the display. The corresponding action procedure is recall().

SUM

Adds the number in the display to the number in the memory location. The corresponding action procedure is sum().

EXC

Swaps the number in the display with the number in the memory location. The corresponding action procedure for the TI calculator is exchange().

+/-

Negate; change sign. The corresponding action procedure is negate().

.

Decimal point. The action procedure is decimal().

<-

This is a backspace key that can be used if you make a mistake while entering a number. It will erase digits from the display. (See BUGS). Inverse backspace will clear the X register. The corresponding action procedure is back().

ON

Clears the display, the state, and the memory. Pressing it with the third pointer button turns off the calculator, in that it exits the program. To clear state, the action procedure is off; to quit, quit().

INV

Inverts the meaning of the function keys. This would be the f key on an HP calculator, but xcalc does not display multiple legends on each key. See the individual function keys for details.

10^x

Raises "10.0" to the number in the top of the stack. When inverted, it calculates the log (base 10) of the number in the display. The corresponding action procedure is tenpower().

e^x

Raises "e" to the number in the top of the stack. When inverted, it calculates the log (base e) of the number in the display. The action procedure is epower().

STO

Copies the number in the top of the stack to a memory location. There are 10 memory locations. The desired memory is specified by following this key with a digit key.

RCL

Pushes the number from the specified memory location onto the stack.

SUM

Adds the number on top of the stack to the number in the specified memory location.

x:y

Exchanges the numbers in the top two stack positions, the X and Y registers. The corresponding action procedure is XexchangeY().

R v

Rolls the stack downward. When inverted, it rolls the stack upward. The corresponding action procedure is roll().

blank

These keys were used for programming functions on the HP-10C. Their functionality has not been duplicated in xcalc.

SQRT

SQRT

r

squareRoot()

squareRoot()

AC

ON

space

clear()

clear()

AC

<-

Delete

clear()

back()

AC

<-

Backspace

clear()

back()

AC

<-

Control-H

clear()

back()

AC

Clear

clear()

AC

ON

q

quit()

quit()

AC

ON

Control-C

quit()

quit()

INV

i

i

inverse()

inverse()

sin

s

s

sine()

sine()

cos

c

c

cosine()

cosine()

tan

t

t

tangent()

tangent()

DRG

DRG

d

degree()

degree()

e

e

e()

ln

ln

l

naturalLog()

naturalLog()

y^x

y^x

^

power()

power()

PI

PI

p

pi()

pi()

x!

x!

!

factorial()

factorial()

(

(

leftParen()

)

)

rightParen()

/

/

/

divide()

divide()

*

*

*

multiply()

multiply()

-

-

-

subtract()

subtract()

+

+

+

add()

add()

=

=

equal()

0..9

0..9

0..9

digit()

digit()

.

.

.

decimal()

decimal()

+/-

CHS

n

negate()

negate()

x:y

x

XexchangeY()

ENTR

Return

enter()

ENTR

Linefeed

enter()

XCalc.ti.Command.background:

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XCalc.ti.Command.foreground:

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XCalc.ti.button20.background:

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XCalc.ti.button20.foreground:

white

XCalc.ti.button22.background:

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XCalc.ti.button22.foreground:

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Form ti or hp (the name depends on the mode)

Form bevel

Form screen

Label M

Toggle LCD

Label INV

Label DEG

Label RAD

Label GRAD

Label P

Command button1

Command button2

Command button3

Command button38

Command button39

Command button40