sc::Integral - The Integral abstract class acts as a factory to provide objects that compute one and two

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Version 2.3.1                                    Sun Oct 4 2020                                  sc::Integral(3)

       The Integral abstract class acts as a factory to provide objects that compute one and two electron
       integrals.

virtualRef<OneBodyInt>sc::Integral::dipole(constRef<DipoleData>&)[purevirtual]
       Return a OneBodyInt that computes electric dipole moment integrals. The canonical order of integrals in a
       set is x, y, z.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   virtualRef<TwoBodyTwoCenterInt>sc::Integral::electron_repulsion2()[virtual]
       Return a TwoBodyTwoCenterInt that computes electron repulsion integrals. If this is not re-implemented it
       will throw.

       Reimplemented in sc::IntegralV3.

   virtualRef<TwoBodyTwoCenterDerivInt>sc::Integral::electron_repulsion2_deriv()[virtual]
       Return a TwoBodyTwoCenterInt that computes electron repulsion integrals. If this is not re-implemented it
       will throw.

   virtualRef<TwoBodyThreeCenterInt>sc::Integral::electron_repulsion3()[virtual]
       Return a TwoBodyThreeCenterInt that computes electron repulsion integrals. If this is not re-implemented
       it will throw.

       Reimplemented in sc::IntegralV3.

   virtualRef<TwoBodyThreeCenterDerivInt>sc::Integral::electron_repulsion3_deriv()[virtual]
       Return a TwoBodyThreeCenterInt that computes electron repulsion integrals. If this is not re-implemented
       it will throw.

   virtualintsc::Integral::equiv(constRef<Integral>&)[virtual]
       Returns nonzero if this and the given Integral object have the same integral ordering, normalization
       conventions, etc.

   virtualRef<TwoBodyInt>sc::Integral::grt()[virtual]
       Return a TwoBodyInt that computes two-electron integrals specific to linear R12 methods. According to the
       convention in the literature, 'g' stands for electron repulsion integral, 'r' for the integral of r12
       operator, and 't' for the commutator integrals. Implementation for this kind of TwoBodyInt is optional.

       Reimplemented in sc::IntegralCints.

   staticIntegral*sc::Integral::initial_integral(int&argc,char**argv)[static]
       Create an integral factory. This routine looks for a -integral argument, then the environmental variable
       INTEGRAL. The argument to -integral should be either string for a ParsedKeyVal constructor or a
       classname. This factory is not guaranteed to have its storage and basis sets set up properly, hence
       set_basis and set_storage need to be called on it.

   virtualCartesianIter*sc::Integral::new_cartesian_iter(int)[purevirtual]
       Return a CartesianIter object. The caller is responsible for freeing the object.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   virtualRedundantCartesianIter*sc::Integral::new_redundant_cartesian_iter(int)[purevirtual]
       Return a RedundantCartesianIter object. The caller is responsible for freeing the object.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   virtualRedundantCartesianSubIter*sc::Integral::new_redundant_cartesian_sub_iter(int)[purevirtual]
       Return a RedundantCartesianSubIter object. The caller is responsible for freeing the object.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   virtualSphericalTransformIter*sc::Integral::new_spherical_transform_iter(intl,intinv=0,intsubl=-1)[purevirtual]
       Return a SphericalTransformIter object. The caller is responsible for freeing the object.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   virtualRef<OneBodyInt>sc::Integral::nuclear()[purevirtual]
       Return a OneBodyInt that computes the nuclear repulsion integrals. Charges from the atoms on center one
       are used. If center two is not identical to center one, then the charges on center two are included as
       well.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   virtualRef<OneBodyInt>sc::Integral::quadrupole(constRef<DipoleData>&)[purevirtual]
       Return a OneBodyInt that computes electric quadrupole moment integrals. The canonical order of integrals
       in a set is x^2, xy, xz, y^2, yz, z^2.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   voidsc::Integral::save_data_state(StateOut&)[virtual]
       Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR
       initializes them. This must be implemented by the derived class if the class has data.

       Reimplemented from sc::SavableState.

       Reimplemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   ShellRotationsc::Integral::shell_rotation(intam,SymmetryOperation&,intpure=0)
       Return the ShellRotation object for a shell of the given angular momentum. Pass nonzero to pure to do
       solid harmonics.

   virtualconstSphericalTransform*sc::Integral::spherical_transform(intl,intinv=0,intsubl=-1)[purevirtual]
       Return a SphericalTransform object. The pointer is only valid while this Integral object is valid.

       Implemented in sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

       sc::Integral - The Integral abstract class acts as a factory to provide objects that compute one and two
       electron integrals.

       #include <integral.h>

       Inherits sc::SavableState.

       Inherited by sc::IntegralCCA, sc::IntegralCints, and sc::IntegralV3.

   PublicMemberFunctionsIntegral (StateIn &)
           Restore the Integral object from the given StateIn object.
       Integral (const Ref< KeyVal > &)
           Construct the Integral object from the given KeyVal object.
       void save_data_state (StateOut &)
           Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR
           initializes them.
       virtual Integral * clone ()=0
           Clones the given Integral factory. The new factory may need to have set_basis and set_storage to be
           called on it.
       virtual int equiv (const Ref< Integral > &)
           Returns nonzero if this and the given Integral object have the same integral ordering, normalization
           conventions, etc.
       void set_storage (size_t i)
           Sets the total amount of storage, in bytes, that is available.
       size_t storage_used ()
           Returns how much storage has been used.
       size_t storage_unused ()
           Returns how much storage was not needed.
       virtual size_t storage_required_eri (const Ref< GaussianBasisSet > &b1, const Ref< GaussianBasisSet >
           &b2=0, const Ref< GaussianBasisSet > &b3=0, const Ref< GaussianBasisSet > &b4=0)
           Returns how much storage will be needed to initialize a two-body integrals evaluator for electron
           repulsion integrals.
       virtual size_t storage_required_grt (const Ref< GaussianBasisSet > &b1, const Ref< GaussianBasisSet >
           &b2=0, const Ref< GaussianBasisSet > &b3=0, const Ref< GaussianBasisSet > &b4=0)
           Returns how much storage will be needed to initialize a two-body integrals evaluator for linear R12
           integrals.
       virtual size_t storage_required_eri_deriv (const Ref< GaussianBasisSet > &b1, const Ref< GaussianBasisSet
           > &b2=0, const Ref< GaussianBasisSet > &b3=0, const Ref< GaussianBasisSet > &b4=0)
           Returns how much storage will be needed to initialize a two-body integrals evaluator for derivative
           electron repulsion integrals.
       void adjust_storage (ptrdiff_t s)
           The specific integral classes use this to tell Integral how much memory they are using/freeing.
       Ref< PetiteList > petite_list ()
           Return the PetiteList object.
       Ref< PetiteList > petite_list (const Ref< GaussianBasisSet > &)
           Return the PetiteList object for the given basis set.
       ShellRotationshell_rotation (int am, SymmetryOperation &, int pure=0)
           Return the ShellRotation object for a shell of the given angular momentum.
       virtual void set_basis (const Ref< GaussianBasisSet > &b1, const Ref< GaussianBasisSet > &b2=0, const
           Ref< GaussianBasisSet > &b3=0, const Ref< GaussianBasisSet > &b4=0)
           Set the basis set for each center.
       virtual CartesianIter * new_cartesian_iter (int)=0
           Return a CartesianIter object.
       virtual RedundantCartesianIter * new_redundant_cartesian_iter (int)=0
           Return a RedundantCartesianIter object.
       virtual RedundantCartesianSubIter * new_redundant_cartesian_sub_iter (int)=0
           Return a RedundantCartesianSubIter object.
       virtual SphericalTransformIter * new_spherical_transform_iter (int l, int inv=0, int subl=-1)=0
           Return a SphericalTransformIter object.
       virtual const SphericalTransform * spherical_transform (int l, int inv=0, int subl=-1)=0
           Return a SphericalTransform object.
       virtual Ref< OneBodyInt > overlap ()=0
           Return a OneBodyInt that computes the overlap.
       virtual Ref< OneBodyInt > kinetic ()=0
           Return a OneBodyInt that computes the kinetic energy.
       virtual Ref< OneBodyInt > point_charge (const Ref< PointChargeData > &)=0
           Return a OneBodyInt that computes the integrals for interactions with point charges.
       virtual Ref< OneBodyOneCenterInt > point_charge1 (const Ref< PointChargeData > &)
           Return a OneBodyInt that computes the integrals for interactions with point charges.
       virtual Ref< OneBodyInt > nuclear ()=0
           Return a OneBodyInt that computes the nuclear repulsion integrals.
       virtual Ref< OneBodyInt > hcore ()=0
           Return a OneBodyInt that computes the core Hamiltonian integrals.
       virtual Ref< OneBodyInt > efield_dot_vector (const Ref< EfieldDotVectorData > &)=0
           Return a OneBodyInt that computes the electric field integrals dotted with a given vector.
       virtual Ref< OneBodyInt > dipole (const Ref< DipoleData > &)=0
           Return a OneBodyInt that computes electric dipole moment integrals.
       virtual Ref< OneBodyInt > quadrupole (const Ref< DipoleData > &)=0
           Return a OneBodyInt that computes electric quadrupole moment integrals.
       virtual Ref< OneBodyDerivInt > overlap_deriv ()=0
           Return a OneBodyDerivInt that computes overlap derivatives.
       virtual Ref< OneBodyDerivInt > kinetic_deriv ()=0
           Return a OneBodyDerivInt that computes kinetic energy derivatives.
       virtual Ref< OneBodyDerivInt > nuclear_deriv ()=0
           Return a OneBodyDerivInt that computes nuclear repulsion derivatives.
       virtual Ref< OneBodyDerivInt > hcore_deriv ()=0
           Return a OneBodyDerivInt that computes core Hamiltonian derivatives.
       virtual Ref< TwoBodyThreeCenterInt > electron_repulsion3 ()
           Return a TwoBodyThreeCenterInt that computes electron repulsion integrals.
       virtual Ref< TwoBodyThreeCenterDerivInt > electron_repulsion3_deriv ()
           Return a TwoBodyThreeCenterInt that computes electron repulsion integrals.
       virtual Ref< TwoBodyTwoCenterInt > electron_repulsion2 ()
           Return a TwoBodyTwoCenterInt that computes electron repulsion integrals.
       virtual Ref< TwoBodyTwoCenterDerivInt > electron_repulsion2_deriv ()
           Return a TwoBodyTwoCenterInt that computes electron repulsion integrals.
       virtual Ref< TwoBodyInt > electron_repulsion ()=0
           Return a TwoBodyInt that computes electron repulsion integrals.
       virtual Ref< TwoBodyDerivInt > electron_repulsion_deriv ()=0
           Return a TwoBodyDerivInt that computes electron repulsion derivatives.
       virtual Ref< TwoBodyInt > grt ()
           Return a TwoBodyInt that computes two-electron integrals specific to linear R12 methods.
       Ref< MessageGrp > messagegrp ()
           Return the MessageGrp used by the integrals objects.

   StaticPublicMemberFunctions
       static Integral * initial_integral (int &argc, char **argv)
           Create an integral factory.
       static void set_default_integral (const Ref< Integral > &)
           Specifies a new default Integral factory.
       static Integral * get_default_integral ()
           Returns the default Integral factory.

   ProtectedMemberFunctionsIntegral (const Ref< GaussianBasisSet > &b1, const Ref< GaussianBasisSet > &b2, const Ref<
           GaussianBasisSet > &b3, const Ref< GaussianBasisSet > &b4)
           Initialize the Integral object given a GaussianBasisSet for each center.

   ProtectedAttributesRef< GaussianBasisSet > bs1_Ref< GaussianBasisSet > bs2_Ref< GaussianBasisSet > bs3_Ref< GaussianBasisSet > bs4_
       size_t storage_
       size_t storage_used_Ref< MessageGrp > grp_