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:
- {@link java.lang.Math.abs(double)} as abs
- {@link java.lang.Math.sqrt(double)} as sqrt
- {@link java.lang.Math.log(double)} as log
- {@link java.lang.Math.exp(double)} as exp
- {@link java.lang.Math.sin(double)} as sin
- {@link java.lang.Math.cos(double)} as cos
- {@link java.lang.Math.tan(double)} as tan
- {@link java.lang.Math.rint(double)} as rint
- {@link java.lang.Math.floor(double)} as floor
- {@link java.lang.Math.ceil(double)} as ceil
- {@link java.lang.Math.pow(double)} as pow
Version:

$Revision: 1000 $

Author:

Benjamin Weber ( benweber at student dot ethz dot ch )

Constructor Summary

Constructors
Constructor Description

MathFunctions()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	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