weka.core.expressionlanguage.common

Class MathFunctions

java.lang.Object

weka.core.expressionlanguage.common.MathFunctions

All Implemented Interfaces:

MacroDeclarations

public class MathFunctions
extends java.lang.Object
implements MacroDeclarations

Macro declarations for common mathematical functions.

The following functions are being exposed through macros:

• java.lang.Math.abs(double) as abs
• java.lang.Math.sqrt(double) as sqrt
• java.lang.Math.log(double) as log
• java.lang.Math.exp(double) as exp
• java.lang.Math.sin(double) as sin
• java.lang.Math.cos(double) as cos
• java.lang.Math.tan(double) as tan
• java.lang.Math.rint(double) as rint
• java.lang.Math.floor(double) as floor
• java.lang.Math.ceil(double) as ceil
• java.lang.Math.pow(double) as pow

Constructor Summary

Constructors

Constructor and Description
MathFunctions()

Method Summary

Modifier and Type	Method and Description
Macro	getMacro(java.lang.String name) Tries to fetch the macro
boolean	hasMacro(java.lang.String name) Whether the macro is declared

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MathFunctions

public MathFunctions()

Method Detail

hasMacro

public boolean hasMacro(java.lang.String name)

Whether the macro is declared

Specified by:

hasMacro in interface MacroDeclarations

Parameters:

name - of the macro

Returns:

whether the macro is declared

getMacro

public Macro getMacro(java.lang.String name)

Tries to fetch the macro

The same invariant of MacroDeclarations applies here too.

Specified by:

getMacro in interface MacroDeclarations

Parameters:

name - name of the macro

Returns:

a macro