Appendix  List of Builtin Functions/Variables
On the RINPn, some functions and variables are available by default. Among them, frequently used functions/variables are shown in the following list.
Builtin Functions
 rad( degree )

The conversion function from degree to radian.
Example: rad( 180.0 )
 deg( radian )

The conversion function from radian to degree.
Example: deg( 2.0 * PI )
 sin( x )

The sine function. The unit of the argument "x" is radian.
Example: sin( PI / 2.0 )
 cos( x )

The cosine function. The unit of the argument "x" is radian.
Example: cos( 2.0 * PI )
 tan( x )

The tangent function. The unit of the argument ®x® is radian.
Example: tan( PI / 4.0 )
 asin( x )

The inverse function of sine (arcsine). The unit of the result is radian.
Example: asin( 1.0 )
 acos( x )

The inverse function of cosine (arccosine). The unit of the result is radian.
Example: acos( 1.0 )
 atan( x )

The inverse function of tangent (arctangent). The unit of the result is radian.
Example: atan( 1.0 )
 sqrt( x )

The squareroot function.
Example: sqrt( 4.0 )
 ln( x )

The logarithm function with the base "e" (napier number).
Example: ln( 10.0 )
 log10( x )

The logarithm function with the base "10".
Example: log10( 1000.0 )
 pow( x, exponent )

The function which returns the value of "x" to "exponent"power.
Example: pow( 2.0, 3.0 )
 exp( exponent )

The function which returns the value of "e" (napier number) to "exponent"power.
Example: exp( 1.2 )
 abs( x )

The absolutevalue function.
Example: abs( 1.23 )
 sum( ... )

The summation function.
Example: sum( 1.23 , 4.56 , 7.89 )
 mean( ... )

The meanvalue (arithmetic mean) function.
Example: mean( 1.23 , 4.56 , 7.89 )
 van( ... )

The variance function ( denominator : n ).
Example: van( 1.23 , 4.56 , 7.89 )
 van1( ... )

The variance function ( denominator : n1 ).
Example: van1( 1.23 , 4.56 , 7.89 )
 sdn( ... )

The standarddeviation function ( denominator : n ).
Example: sdn( 1.23 , 4.56 , 7.89 )
 sdn1( ... )

The standarddeviation function ( denominator : n1 ).
Example: sdn1( 1.23 , 4.56 , 7.89 )
 length( array, dim )

The function which returns length of the "dim"th dimension of an "array".
Example: length( array, 0 )
 output( value )

The function to display the calculated value of scripts. On GUI mode, the value will be displayed on "OUTPUT" textfield (so when this function is called multiple times, the displayed value will be overwritten). On CUI mode, the value will be outputted on the standardoutput as a line.
Example: output( 1.23 )
 print( value )

The function to display long and multipleline texts in general purpose. This function can display contents of arbitrary number of any type values/arrays with delimitting tabspaces. On GUI mode, the value will be appended to the content of a textarea on an independent window, without linefeedings. On CUI mode, the value will be outputted to the standardoutput, without
Example: print( 1.2 , 3.4 , 5.6 )
 println( value )

Almost the same with the above "print" function, but this function displays/outputs the content with linefeedings.
Example: println( 1.2 , 3.4 , 5.6 )
Builtin Variables
 PI

The constant variable storing the value of the circle ratio π.
Value: 3.141592653589793
 Introduction  Overview of the RINPn and Preparation to Use
 Step 1  How to Use in GUI Mode (on the Calculator Window)
 Step 2  How to Use in CUI Mode (on the CommandLine Terminal)
 Step 3  How to Execute Scripts
 Step 4  How to Add Functions/Variables by Scripts (Library Scripts)
 Step 5  Implement Functions/Variables in Java® (Plugin Development)
 Step 6  How to Embed into Other Software
 Appendix  List of Builtin Functions/Variables