man sc::SpatialMOPairIter (3): SpatialMOPairIter gives the ordering of pairs of spatial orbitals.

SYNOPSIS

#include <pairiter.h>

Inherits sc::MOPairIter.

Inherited by sc::SpatialMOPairIter_eq, and sc::SpatialMOPairIter_neq.

Public Member Functions

SpatialMOPairIter (const Ref< MOIndexSpace > &space_i, const Ref< MOIndexSpace > &space_j)
Initialize a spatial pair iterator for the given MO spaces.
virtual int nij_aa () const =0
Returns the number of functions in alpha-alpha space.
virtual int nij_ab () const =0
Returns the number of functions in alpha-beta space.
virtual int ij_aa () const =0
Returns compound index ij for alpha-alpha case.
virtual int ij_ab () const =0
Returns compound index ij for alpha-beta case.
virtual int ij_ba () const =0
Returns compound index ij for beta-alpha case.

Detailed Description

SpatialMOPairIter gives the ordering of pairs of spatial orbitals.

Different spin cases appear.

Member Function Documentation

virtual int sc::SpatialMOPairIter::ij_aa () const [pure virtual]

Returns compound index ij for alpha-alpha case. If the combintaion is not allowed then return -1

Implemented in sc::SpatialMOPairIter_eq, and sc::SpatialMOPairIter_neq.

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