public class DJep extends XJep implements Serializable
DJep j = new DJep(); j.addStandardDiffRules(); .... Node node = j.parse("x^3"); Node diff = j.differentiate(node,"x"); Node simp = j.simplify(diff); j.println(simp); Node node2 = j.parse("diff(x^4,x)"); Node proc = j.preprocess(node2); Node simp2 = j.simplify(proc); j.println(simp2);
Constructor and Description |
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DJep()
Standard constructor.
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Modifier and Type | Method and Description |
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void |
addDiffRule(DiffRulesI rule)
Adds a rule with instruction on how to differentiate a function.
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boolean |
addStandardDiffRules()
Adds the standard set of differentation rules.
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Node |
differentiate(Node node,
String name)
Differentiate an equation with respect to a variable.
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DifferentiationVisitor |
getDifferentationVisitor()
Returns the visitor used for differentiation.
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XJep |
newInstance()
Creates a new instance of XJep with the same components as this one.
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XJep |
newInstance(SymbolTable st)
Creates a new instance of XJep with the same components as this one and the specified symbol table.
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addComplex, addStandardConstants, addStandardFunctions, calcVarValue, continueParsing, deepCopy, evaluate, getNodeFactory, getPrintVisitor, getTreeUtils, getVarsInEquation, preprocess, print, print, println, println, recursiveGetVarsInEquation, restartParser, restartParser, simplify, substitute, substitute, toString
addConstant, addFunction, addVariable, addVariable, addVariable, evaluate, getAllowAssignment, getAllowUndeclared, getComplexValue, getErrorInfo, getEvaluatorVisitor, getFunctionTable, getImplicitMul, getNumberFactory, getOperatorSet, getParser, getSymbolTable, getTopNode, getTraverse, getValue, getValueAsObject, getVar, getVarValue, hasError, initFunTab, initSymTab, parse, parseExpression, removeFunction, removeVariable, setAllowAssignment, setAllowUndeclared, setImplicitMul, setTraverse, setVarValue
public DJep()
public Node differentiate(Node node, String name) throws ParseException
node
- top node of the expression tree to differentiate.name
- differentiate with respect to this variable.ParseException
- if for some reason equation cannot be differentiated,
usually if it has not been taught how to differentiate a particular function.public XJep newInstance()
XJep
newInstance
in class XJep
public XJep newInstance(SymbolTable st)
XJep
newInstance
in class XJep
public DifferentiationVisitor getDifferentationVisitor()
public boolean addStandardDiffRules()
sin,cos,tan,asin,acos,atan,sinh,cosh,tanh,asinh,acosh,atanh sqrt,log,ln,abs,angle sum,im,re are handled separately. rand and mod currently un-handled Also adds rules for functions not in JEP function list: sec,cosec,cot,exp,pow,sgn TODO include if, min, max, sgn
public void addDiffRule(DiffRulesI rule)
rule
- Jas4pp 1.5 © Java Analysis Studio for Particle Physics