public void Visit(Compiled.TermPower elem)
{
double baseVal = ValueOf(elem.Base);
double exponent = ValueOf(elem.Exponent);
elem.Value = Math.Pow(baseVal, exponent);
elem.Inputs[0].Weight = exponent * Math.Pow(baseVal, exponent - 1);
elem.Inputs[1].Weight = elem.Value * Math.Log(baseVal);
}
public void Visit(Compiled.TermPower elem)
{
Debug.Assert(ArgumentIndex == 0 || ArgumentIndex == 1);
if (ArgumentIndex == 0)
{
var exponent = ValueOf(elem.Exponent);
LocalDerivative = elem.Adjoint * exponent * Math.Pow(ValueOf(elem.Base), exponent - 1);
}
else
{
var baseValue = ValueOf(elem.Base);
LocalDerivative = elem.Adjoint * Math.Pow(baseValue, ValueOf(elem.Exponent)) * Math.Log(baseValue);
}
}
public TapeElement Visit(TermPower power)
{
return(Compile(power, () =>
{
var baseElement = power.Base.Accept(this);
var expElement = power.Exponent.Accept(this);
var element = new Compiled.TermPower
{
Inputs = MakeInputEdges(() =>
{
edges.Add(new InputEdge {
Element = baseElement
});
edges.Add(new InputEdge {
Element = expElement
});
}),
};
return element;
}));
}
public int Visit(TermPower power)
{
return(Compile(power, () =>
{
var baseIndex = power.Base.Accept(this);
var expIndex = power.Exponent.Accept(this);
var element = new Compiled.TermPower
{
Base = baseIndex,
Exponent = expIndex,
Inputs = new Compiled.InputEdge[]
{
new Compiled.InputEdge {
Index = baseIndex
},
new Compiled.InputEdge {
Index = expIndex
},
},
};
return element;
}));
}
public void Visit(Compiled.TermPower elem)
{
elem.Value = Math.Pow(ValueOf(elem.Base), ValueOf(elem.Exponent));
}