MathDAG::IntegralInputVariableDAG Struct Reference

represents the input of an integration operation - differs from Variable DAG in that it doesn't refer to the VariableValue More...

#include <equations.h>

Inheritance diagram for MathDAG::IntegralInputVariableDAG:

Collaboration diagram for MathDAG::IntegralInputVariableDAG:

Public Member Functions
VariableValuePtr	addEvalOps (EvalOpVector &, const VariableValuePtr &) override
	adds EvalOps to an EvalOpVector representing this node. More...
Public Member Functions inherited from MathDAG::VariableDAG
	VariableDAG ()
	reference to operation if this is an integral variable More...
	VariableDAG (const string &valueId, const string &name, Type type)
int	BODMASlevel () const override
	algebraic heirarchy level, used for working out whether brackets are necessary. More...
int	order (unsigned maxOrder) const override
	returns evaluation order in sequence of variable defintions More...
bool	tensorEval (std::set< const Node *> &) const override
	returns true if the evaluation of this involves tensor processing More...
ostream &	latex (ostream &) const override
	writes LaTeX representation of this DAG to the stream More...
ostream &	matlab (ostream &) const override
	writes a matlab representation of this DAG to the stream More...
void	render (ecolab::cairo::Surface &surf) const override
	renders a visual representation of this node to surf graphic extends right from the current pen position (which needs to be defined), and pen is moved to the right edge of the graphic. The determine bounding box, render into a recording surface, and use width()/height() More...
NodePtr	derivative (SystemOfEquations &) const override
	support for the derivative operator. More...
bool	addTensorOp (EvalOpVector &ev)
	adds a TensorEvalOp, returns true if successful More...
virtual bool	tensorEval (std::set< const Node * > &visited) const=0
	returns true if the evaluation of this involves tensor processing More...
bool	tensorEval ()
	returns true if the evaluation of this involves tensor processing More...
virtual ostream &	latex (ostream &) const=0
	writes LaTeX representation of this DAG to the stream More...
LaTeXManip	latex () const
	used within io streaming More...
virtual ostream &	matlab (ostream &) const=0
	writes a matlab representation of this DAG to the stream More...
MatlabManip	matlab () const
virtual VariableValuePtr	addEvalOps (EvalOpVector &, const VariableValuePtr &result={})=0
	adds EvalOps to an EvalOpVector representing this node. More...
Public Member Functions inherited from MathDAG::Node
virtual	~Node ()
std::string	latexStr () const
std::string	matlabStr () const
bool	tensorEval ()
	returns true if the evaluation of this involves tensor processing More...
LaTeXManip	latex () const
	used within io streaming More...
MatlabManip	matlab () const

Additional Inherited Members
Public Types inherited from minsky::VariableType
enum	Type {   undefined, constant, parameter, flow,   integral, stock, tempFlow, numVarTypes }
Static Public Member Functions inherited from minsky::VariableType
static std::string	typeName (int t)
Public Attributes inherited from MathDAG::VariableDAG
string	valueId
Type	type =undefined
string	name
string	init ="0"
WeakNodePtr	rhs
IntOp *	intOp =0
Public Attributes inherited from MathDAG::Node
int	cachedOrder =-1
VariableValuePtr	result
	reference to where this node's value is stored More...

Detailed Description

represents the input of an integration operation - differs from Variable DAG in that it doesn't refer to the VariableValue

Definition at line 212 of file equations.h.

Member Function Documentation

addEvalOps()

VariableValuePtr MathDAG::IntegralInputVariableDAG::addEvalOps ( EvalOpVector &  , const VariableValuePtr &  result  )

overridevirtual

adds EvalOps to an EvalOpVector representing this node.

Returns

a variable where the result is stored. If a flowVariable has been provided in result, that may be used directly, otherwise a copy operation is added to ensure it receives the result.

Reimplemented from MathDAG::VariableDAG.

Definition at line 148 of file equations.cc.

References minsky::doOneEvent(), minsky::VariableType::tempFlow, and minsky::VariableType::undefined.

  {
    assert(result);
    if (result->type()==VariableType::undefined)
      {
        assert(r);
        if (r->type()!=VariableType::undefined && r->isFlowVar())
          result=r;
        else
          {
            result=VariableValuePtr(VariableType::tempFlow);
            result->allocValue();
          }
        if (rhs)
          rhs->addEvalOps(ev, result);
        else 
          throw runtime_error("integral not defined for "+name);
      }
    assert(result->idx()>=0);
    if (r && r->isFlowVar() && (r!=result || !result->isFlowVar()))
      ev.emplace_back(EvalOpPtr(new TensorEval(r,result)));
    doOneEvent(true);
    return result;
  }

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The documentation for this struct was generated from the following files:

• engine/equations.h
• engine/equations.cc