Class RoundSF
- java.lang.Object
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- com.singularsys.jep.functions.PostfixMathCommand
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- com.singularsys.jep.functions.NaryFunction
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- com.singularsys.jep.misc.functions.RoundSF
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- 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
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Field Summary
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Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand
curNumberOfParameters, name, NaN, numberOfParameters
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Constructor Summary
Constructors Constructor Description RoundSF()
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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
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Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand
asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString, toString
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Method Detail
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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 interfacePostfixMathCommandI
- Overrides:
checkNumberOfParameters
in classPostfixMathCommand
- Parameters:
n
- number of parameters function will be called with.- Returns:
- false if an illegal number of parameters is supplied, true otherwise.
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eval
public java.lang.Object eval(java.lang.Object[] args) throws EvaluationException
Description copied from class:NaryFunction
Evaluate the function- Specified by:
eval
in classNaryFunction
- Parameters:
args
- arguments to the function- Returns:
- value returned by the function
- Throws:
EvaluationException
- if the calculation cannot be performed
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bigDecValue
public java.math.BigDecimal bigDecValue(java.lang.String val, int sf)
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