EinIndexSpace

class EinIndexSpace : public EinAbstractIndex

EinIndexSpace provides a concrete interface to index spaces

Inheritance:

Public Methods
EinIndexSpace(): Default constructor yields an empty index
EinIndexSpace(const EinAbstractIndex &ai_): This constructor clones and keeps the abstract index.
EinIndexSpace(const EinIndexSpace &is): Copy constructor maintains reference counting.
~EinIndexSpace(): Destructor
void operator=(const EinAbstractIndex &ai_): Assignment clones and keeps the abstract index.
void operator=(const EinIndexSpace &is): This assignment maintains reference count.
virtual EinAbstractIndex* virtualCopy() const: Virtual constructor, clones the object.
virtual int containsCount(const EinIndex &I) const: counts numbers of indices with specified ID
virtual EinIndex getIndex(int slot) const: Returns the index in the specified slot.
virtual void setIndex(int slot, const EinIndex &I): Sets an index in the specified slot.
virtual int fixed() const: True if the index is set to a value or involved in a loop.
virtual void begin(): Shall be called when beginning a loop
virtual int end() const: Shall be true when exiting a loop
virtual void next(): Iterate over the index values with next
virtual void operator++(): Iterate over the index values with pre-increment
virtual void operator++(int): Iterate over the index values with post-increment
virtual int current() const: returns the current value for an index
virtual int dim() const: n:o total elements
virtual int size() const: n:o indep. elements, equals n:o orbits
virtual int rank() const: n:o slots
virtual ostream& display(ostream &os) const: output on stream
virtual int currentSign() const: Returns -1, 0, or 1, depending on the current sign w.r.t. canonical element in orbit
virtual int currentOrbitSize() const: Returns n:o elements in orbit
virtual int isNonSymmetric() const: True for index spaces with no symmetries
virtual int isSymmetric() const: True for completely symmetric index spaces
virtual int isAntiSymmetric() const: True for completely anti-symmetric index spaces
int orbit(const EinMultiInt &m) const: returns the orbit for given multi-int
int sign(const EinMultiInt &m) const: Returns -1, 0, or 1, depending on the sign w.r.t. canonical element in orbit
int orbitSize(const EinMultiInt &m) const: Returns n:o elements in orbit