Package net.sf.saxon.functions

## Class Round

- java.lang.Object
- - net.sf.saxon.functions.AbstractFunction
  - - net.sf.saxon.functions.SystemFunction
    - - net.sf.saxon.functions.Round

- All Implemented Interfaces:
    `Callable`, `Function`, `GroundedValue`, `Item`, `Sequence`

      public final class Round
      extends SystemFunction

  This class implements the fn:round() function

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `Round()` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `ZeroOrOne` | `call​(XPathContext context, Sequence[] arguments)` | Evaluate the expression
    `int` | `getCardinality​(Expression[] arguments)` | Determine the cardinality of the function.
    `java.lang.String` | `getCompilerName()` | Get the (local) name of a class that can be used to generate bytecode for this system function

    - ### Methods inherited from class net.sf.saxon.functions.SystemFunction

      `dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getStreamerName, importAttributes, isTrustedResultType, makeCall, makeFunction, makeFunctionCall, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, toShortString, toString, typeCheckCaller`

    - ### Methods inherited from class net.sf.saxon.functions.AbstractFunction

      `atomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheck`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface net.sf.saxon.om.Function

      `getGenre`

    - ### Methods inherited from interface net.sf.saxon.om.GroundedValue

      `asIterable, concatenate, containsNode, materialize`

    - ### Methods inherited from interface net.sf.saxon.om.Item

      `getLength, head, isStreamed, itemAt, iterate, reduce, subsequence`

    - ### Methods inherited from interface net.sf.saxon.om.Sequence

      `makeRepeatable`

- - ### Constructor Detail

    - #### Round

          public Round()

  - ### Method Detail

    - #### getCardinality

          public int getCardinality​(Expression[] arguments)

      Determine the cardinality of the function.
      Overrides:
        `getCardinality` in class `SystemFunction`
      Parameters:
        `arguments` - the actual arguments supplied
      Returns:
        the most precise available cardinality that the function will return

    - #### call

          public ZeroOrOne call​(XPathContext context,
                                Sequence[] arguments)
                         throws XPathException

      Evaluate the expression
      Parameters:
        `context` - the dynamic evaluation context
        `arguments` - the values of the arguments, supplied as Sequences
      Returns:
        the result of the evaluation, in the form of a Sequence
      Throws:
        `XPathException` - if a dynamic error occurs during the evaluation of the expression

    - #### getCompilerName

          public java.lang.String getCompilerName()

      Description copied from class: `SystemFunction`
      Get the (local) name of a class that can be used to generate bytecode for this system function
      Overrides:
        `getCompilerName` in class `SystemFunction`
      Returns:
        the name of a bytecode generation class, or null if there is no bytecode support for this function