get_possible_spaces_t

abstract interface
private pure function get_possible_spaces_t(this, supergroup, add_holes, add_particles, n_total) result(spaces)

Type	Intent	Optional		Name
class(GASSpec_t),	intent(in)		::	this	Specification of GAS spaces.
integer,	intent(in)		::	supergroup(size(this%GAS_sizes))	The particles per GAS space.
integer,	intent(in),	optional	::	add_holes(:)	An index of orbitals where particles should be deleted before creating the new particle.
integer,	intent(in),	optional	::	add_particles(:)	Index of orbitals where particles should be created before creating the new particle.
integer,	intent(in),	optional	::	n_total	The total number of particles that will be created. Defaults to one. (Relevant for double excitations)

Return the GAS spaces, where one particle can be created.

The returned array can be empty (allocated, but size == 0).