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## com.singularsys.jep.misc.functions
Class RoundSF

    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
`RoundSF()`

Method Summary
`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)`

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, checkStack, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString`

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

  Specified by:
    `eval` in class `NaryFunction`
  Throws:
    `EvaluationException`

### bigDecValue

    public java.math.BigDecimal bigDecValue(java.lang.String val,
                                            int sf)

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Copyright © 2008 Singular Systems http://www.singularsys.com/jep