RoundSF (Jep with extensions API )

java.lang.Object
- com.singularsys.jep.functions.PostfixMathCommand
- - com.singularsys.jep.functions.NaryFunction
  - - com.singularsys.jep.misc.functions.RoundSF

All Implemented Interfaces:

PostfixMathCommandI, java.io.Serializable
```
public class RoundSF
extends NaryFunction
```
Rounds to a specific number of significant figures. The single argument constructor rounds to 16 sf the IEEE 754 decimal64 precision. Conversion is achieved by converting to a BigDecimal with the specific precision.

See Also:

Serialized Form

Field Summary
- Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand
  curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

Constructors
Constructor Description

RoundSF()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.math.BigDecimal`	`bigDecValue(java.lang.String val, int sf)`
`boolean`	`checkNumberOfParameters(int n)`	Checks the number of parameters of the function.
`java.lang.Object`	`eval(java.lang.Object[] args)`	Evaluate the function

Methods inherited from class com.singularsys.jep.functions.NaryFunction
run

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand
asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - RoundSF
```
public RoundSF()
```
- Method Detail
  - checkNumberOfParameters
```
public boolean checkNumberOfParameters(int n)
```
    Description copied from class: PostfixMathCommand
    
    Checks the number of parameters of the function. Functions which set numberOfParameter=-1 should overload this method
    
    Specified by:
    
    checkNumberOfParameters in interface PostfixMathCommandI
    
    Overrides:
    
    checkNumberOfParameters in class PostfixMathCommand
    
    Parameters:
    
    n - number of parameters function will be called with.
    
    Returns:
    
    false if an illegal number of parameters is supplied, true otherwise.
  - eval
```
public java.lang.Object eval(java.lang.Object[] args)
                      throws EvaluationException
```
    Description copied from class: NaryFunction
    
    Evaluate the function
    
    Specified by:
    
    eval in class NaryFunction
    
    Parameters:
    
    args - arguments to the function
    
    Returns:
    
    value returned by the function
    
    Throws:
    
    EvaluationException - if the calculation cannot be performed
  - bigDecValue
```
public java.math.BigDecimal bigDecValue(java.lang.String val,
                                        int sf)
```