Package net.sf.saxon.functions
Class MathFunctionSet.LogFn
java.lang.Object
net.sf.saxon.functions.AbstractFunction
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.MathFunctionSet.LogFn
- All Implemented Interfaces:
Callable,Function,GroundedValue,Item,Sequence
- Enclosing class:
MathFunctionSet
Implement math:log
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptioncall(XPathContext context, Sequence[] args) Invoke the functionprotected doublecompute(double input) Methods inherited from class net.sf.saxon.functions.SystemFunction
dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getCardinality, getCompilerName, 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, typeCheckCallerMethods inherited from class net.sf.saxon.functions.AbstractFunction
atomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheckMethods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitMethods inherited from interface net.sf.saxon.om.GroundedValue
asIterable, concatenate, containsNode, materializeMethods inherited from interface net.sf.saxon.om.Item
getLength, head, isStreamed, itemAt, iterate, reduce, subsequenceMethods inherited from interface net.sf.saxon.om.Sequence
makeRepeatable
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Constructor Details
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LogFn
public LogFn()
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Method Details
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compute
protected double compute(double input) -
call
Description copied from interface:FunctionInvoke the function- Parameters:
context- the XPath dynamic evaluation contextargs- the actual arguments to be supplied- Returns:
- the result of invoking the function
- Throws:
XPathException- if a dynamic error occurs within the function
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