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sc::PsiWavefunction(3)		     MPQC		sc::PsiWavefunction(3)

NAME
       sc::PsiWavefunction - PsiWavefunction is	an abstract base for all Psi
       wave functions.

SYNOPSIS
       #include	<psiwfn.h>

       Inherits	sc::Wavefunction.

       Inherited by sc::PsiCCSD, sc::PsiCCSD_T,	and sc::PsiSCF.

   Public Member Functions
       PsiWavefunction (const Ref< KeyVal > &)
	   The KeyVal constructor.
       PsiWavefunction (StateIn	&)
       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 void write_basic_input (int conv)
	   Writes out Psi input	file entries specific to this PsiWavefunction.
       void compute ()
	   Recompute at	least the results that have compute true and are not
	   already computed.
       void print (std::ostream	&o=ExEnv::out0()) const
	   Print information about the object.
       RefSymmSCMatrix density ()
	   Returns the SO density.
       int nelectron ()
	   Returns the number of electrons.
       Ref< PsiExEnv > get_psi_exenv ()	const
	   Return an associated	PsiExEnv object.
       Ref< PsiInput > get_psi_input ()	const
	   Return an associated	PsiInput object.

       Public Member Functions inherited from sc::Wavefunction
       Wavefunction (StateIn &)
       Wavefunction (const Ref<	KeyVal > &)
	   The KeyVal constructor.
       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.
       double density (const SCVector3 &)
       double density_gradient (const SCVector3	&, double *)
       double natural_orbital (const SCVector3 &r, int iorb)
       double natural_orbital_density (const SCVector3 &r, int orb, double
	   *orbval=0)
       double orbital (const SCVector3 &r, int iorb, const RefSCMatrix &orbs)
       double orbital_density (const SCVector3 &r, int iorb, const RefSCMatrix
	   &orbs, double *orbval=0)
       double charge ()
	   Returns the charge.
       virtual int nelectron ()=0
	   Returns the number of electrons.
       virtual RefSymmSCMatrix density ()=0
	   Returns the SO density.
       virtual RefSymmSCMatrix ao_density ()
	   Returns the AO density.
       virtual RefSCMatrix natural_orbitals ()
	   Returns the natural orbitals.
       virtual RefDiagSCMatrix natural_density ()
	   Returns the natural density (a diagonal matrix).
       virtual int spin_polarized ()=0
	   Return 1 if the alpha density is not	equal to the beta density.
       virtual RefSymmSCMatrix alpha_density ()
	   Return alpha	electron densities in the SO basis.
       virtual RefSymmSCMatrix beta_density ()
	   Return beta electron	densities in the SO basis.
       virtual RefSymmSCMatrix alpha_ao_density	()
	   Return alpha	electron densities in the AO basis.
       virtual RefSymmSCMatrix beta_ao_density ()
	   Return beta electron	densities in the AO basis.
       virtual RefSCMatrix nao (double *atom_charges=0)
	   returns the ao to nao transformation	matrix
       virtual RefSymmSCMatrix overlap ()
	   Returns the SO overlap matrix.
       virtual RefSymmSCMatrix core_hamiltonian	()
	   Returns the SO core Hamiltonian.
       virtual double nuclear_repulsion_energy ()
	   Returns the nuclear repulsion energy.
       void nuclear_repulsion_energy_gradient (double *g)
	   Computes the	nuclear	repulsion gradient.
       virtual void nuclear_repulsion_energy_gradient (double **g)
	   Computes the	nuclear	repulsion gradient.
       RefSCDimension ao_dimension ()
	   Atomic orbital dimension.
       RefSCDimension so_dimension ()
	   Symmetry adapted orbital dimension.
       RefSCDimension oso_dimension ()
	   Orthogonalized symmetry adapted orbital dimension.
       Ref< SCMatrixKit	> basis_matrixkit ()
	   Matrix kit for AO, SO, orthogonalized SO, and MO dimensioned
	   matrices.
       Ref< Molecule > molecule	() const
	   Returns the Molecule.
       Ref< GaussianBasisSet > basis ()	const
	   Returns the basis set.
       Ref< GaussianBasisSet > atom_basis () const
	   Returns the basis set describing the	nuclear	charge distributions.
       const double * atom_basis_coef () const
	   Returns the coefficients of the nuclear charge distribution basis
	   functions.
       Ref< Integral > integral	()
	   Returns the integral	evaluator.
       void symmetry_changed ()
	   Call	this if	you have changed the molecular symmetry	of the
	   molecule contained by this MolecularEnergy.
       RefSCMatrix so_to_orthog_so ()
	   Returns a matrix which does the default transform from SO's to
	   orthogonal SO's.
       RefSCMatrix so_to_orthog_so_inverse ()
	   Returns the inverse of the transformation returned by
	   so_to_orthog_so.
       OverlapOrthog::OrthogMethod orthog_method () const
	   Returns the orthogonalization method.
       void set_orthog_method (const OverlapOrthog::OrthogMethod &)
	   (Re)Sets the	orthogonalization method and makes this	obsolete
       double lindep_tol () const
	   Returns the tolerance for linear dependencies.
       void set_lindep_tol (double)
	   Re(Sets) the	tolerance for linear dependencies.
       void obsolete ()
	   Marks all results as	being out of date.
       void print (std::ostream	&=ExEnv::out0()) const
	   Print information about the object.

       Public Member Functions inherited from sc::MolecularEnergy
       MolecularEnergy (const MolecularEnergy &)
       MolecularEnergy (const Ref< KeyVal > &)
	   The KeyVal constructor.
       MolecularEnergy (StateIn	&)
       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.
       void set_checkpoint ()
	   Set up checkpointing.
       void set_checkpoint_file	(const char *)
       void set_checkpoint_freq	(int freq)
       bool if_to_checkpoint ()	const
	   Check if need to checkpoint.
       const char * checkpoint_file () const
       int checkpoint_freq () const
       MolecularEnergy & operator= (const MolecularEnergy &)
       virtual double energy ()
	   A wrapper around value();.
       virtual Ref< Molecule > molecule	() const
       virtual RefSCDimension moldim ()	const
       void guess_hessian (RefSymmSCMatrix &)
	   Compute a quick, approximate	hessian.
       RefSymmSCMatrix inverse_hessian (RefSymmSCMatrix	&)
       RefSymmSCMatrix hessian ()
	   If a	molecule hessian object	is given, it will be used to provide a
	   hessian.
       int hessian_implemented () const
       void set_x (const RefSCVector &)
	   Set and retrieve the	coordinate values.
       RefSCVector get_cartesian_x ()
	   Return the cartesian	coordinates.
       RefSCVector get_cartesian_gradient ()
	   Return the cartesian	gradient.
       RefSymmSCMatrix get_cartesian_hessian ()
	   Return the cartesian	hessian.
       Ref< MolecularCoor > molecularcoor ()
       virtual void symmetry_changed ()
	   Call	this if	you have changed the molecular symmetry	of the
	   molecule contained by this MolecularEnergy.
       Ref< NonlinearTransform > change_coordinates ()
	   An optimizer	can call change	coordinates periodically to give the
	   function an opportunity to change its coordinate system.
       void print_natom_3 (const RefSCVector &,	const char *t=0, std::ostream
	   &o=ExEnv::out0()) const
	   Nicely print	n x 3 data that	are stored in a	vector.
       void print_natom_3 (double **, const char *t=0, std::ostream
	   &o=ExEnv::out0()) const
       void print_natom_3 (double *, const char	*t=0, std::ostream
	   &o=ExEnv::out0()) const
       virtual void print (std::ostream	&=ExEnv::out0()) const
	   Print information about the object.

       Public Member Functions inherited from sc::Function
       virtual RefSCVector gradient ()
       int gradient_needed () const
       int do_gradient (int)
       virtual void set_desired_gradient_accuracy (double)
       virtual double actual_gradient_accuracy () const
       virtual double desired_gradient_accuracy	() const
       AccResultRefSCVector & gradient_result ()
       int hessian_needed () const
       int do_hessian (int)
       virtual void set_desired_hessian_accuracy (double)
       virtual double actual_hessian_accuracy () const
       virtual double desired_hessian_accuracy () const
       AccResultRefSymmSCMatrix	& hessian_result ()
       virtual int value_implemented ()	const
	   Information about the availability of values, gradients, and
	   hessians.
       virtual int gradient_implemented	() const
       RefSCVector get_x () const
       const RefSCVector & get_x_no_copy () const
       Function	()
       Function	(StateIn &)
       Function	(const Function	&)
       Function	(const Ref< KeyVal > &,	double funcacc=DBL_EPSILON, double
	   gradacc=DBL_EPSILON,	double hessacc=DBL_EPSILON)
	   The keyval constructor reads	the following keywords:
       virtual ~Function ()
       Function	& operator= (const Function &)
       Ref< SCMatrixKit	> matrixkit () const
	   Return the SCMatrixKit used to construct vectors and	matrices.
       RefSCDimension dimension	() const
	   Return the SCDimension of the problem.
       virtual double value ()
	   Return the value of the function.
       int value_needed	() const
	   Returns nonzero if the current value	is not up-to-date.
       int do_value (int)
	   If passed a nonzero number, compute the value the next time
	   compute() is	called.
       AccResultdouble & value_result ()
       virtual void set_desired_value_accuracy (double)
	   Set the accuracy to which the value is to be	computed.
       virtual double actual_value_accuracy () const
	   Return the accuracy with which the value has	been computed.
       virtual double desired_value_accuracy ()	const
	   Return the accuracy with which the value is to be computed.

       Public Member Functions inherited from sc::SavableState
       SavableState & operator=	(const SavableState &)
       void save_state (StateOut &)
	   Save	the state of the object	as specified by	the StateOut object.
       void save_object_state (StateOut	&)
	   This	can be used for	saving state when the exact type of the	object
	   is known for	both the save and the restore.
       virtual void save_vbase_state (StateOut &)
	   Save	the virtual bases for the object.
       virtual 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.

       Public Member Functions inherited from sc::DescribedClass
       DescribedClass (const DescribedClass &)
       DescribedClass &	operator= (const DescribedClass	&)
       ClassDesc * class_desc () const	throw ()
	   This	returns	the unique pointer to the ClassDesc corresponding to
	   the given type_info object.
       const char * class_name () const
	   Return the name of the object's exact type.
       int class_version () const
	   Return the version of the class.
       virtual void print (std::ostream	&=ExEnv::out0()) const
	   Print the object.

       Public Member Functions inherited from sc::RefCount
       int lock_ptr () const
	   Lock	this object.
       int unlock_ptr () const
	   Unlock this object.
       void use_locks (bool inVal)
	   start and stop using	locks on this object
       refcount_t nreference ()	const
	   Return the reference	count.
       refcount_t reference ()
	   Increment the reference count and return the	new count.
       refcount_t dereference ()
	   Decrement the reference count and return the	new count.
       int managed () const
       void unmanage ()
	   Turn	off the	reference counting mechanism for this object.
       int managed () const
	   Return 1 if the object is managed. Otherwise	return 0.

       Public Member Functions inherited from sc::Identity
       Identifier identifier ()
	   Return the Identifier for this argument.
       virtual void obsolete ()
	   Marks all results as	being out of date.

   Protected Member Functions
       virtual void write_input	(int conv)=0
	   Prepares a complete Psi input file. The input file is assumed to
	   have	been opened.

       Protected Member	Functions inherited from sc::Wavefunction
       double min_orthog_res ()
       double max_orthog_res ()
       void copy_orthog_info (const Ref< Wavefunction >	&)

       Protected Member	Functions inherited from sc::MolecularEnergy
       void failure (const char	*)
       virtual void set_energy (double)
	   This	is just	a wrapper around set_value().
       virtual void set_gradient (RefSCVector &)
	   These are passed gradients and hessian in cartesian coordinates.
       virtual void set_hessian	(RefSymmSCMatrix &)
       void x_to_molecule ()
       void molecule_to_x ()

       Protected Member	Functions inherited from sc::Function
       virtual void set_value (double)
       virtual void set_matrixkit (const Ref< SCMatrixKit > &)
	   Set the SCMatrixKit that should be used to construct	the requisite
	   vectors and matrices.
       virtual void set_dimension (const RefSCDimension	&)
       virtual void set_actual_value_accuracy (double)
       virtual void set_actual_gradient_accuracy (double)
       virtual void set_actual_hessian_accuracy	(double)
       RefSCVector & get_x_reference ()
	   Get read/write access to the	coordinates for	modification.
       void do_change_coordinates (const Ref< NonlinearTransform > &)
	   Change the coordinate system	and apply the given transform to
	   intermediates matrices and vectors.

       Protected Member	Functions inherited from sc::SavableState
       SavableState (const SavableState	&)
       SavableState (StateIn &)
	   Each	derived	class StateIn CTOR handles the restore corresponding
	   to calling save_object_state, save_vbase_state, and save_data_state
	   listed above.

       Protected Member	Functions inherited from sc::RefCount
       RefCount	(const RefCount	&)
       RefCount	& operator= (const RefCount &)
       virtual void compute ()=0
	   Recompute at	least the results that have compute true and are not
	   already computed.

   Protected Attributes
       int nirrep_
       int * docc_
       int * socc_
       int * frozen_docc_
       int * frozen_uocc_
       int multp_
       int charge_
       char * memory_

       Protected Attributes inherited from sc::Wavefunction
       int debug_

       Protected Attributes inherited from sc::MolecularEnergy
       Ref< PointGroup > initial_pg_
       int print_molecule_when_changed_

       Protected Attributes inherited from sc::Function
       Ref< SCMatrixKit	> matrixkit_
	   Used	to construct new matrices.
       RefSCVector x_
	   The variables.
       RefSCDimension dim_
	   The dimension of x_.
       AccResultdouble value_
	   The value of	the function at	x_.
       AccResultRefSCVector gradient_
	   The gradient	at x_.
       AccResultRefSymmSCMatrix	hessian_
	   The hessian at x_.

   Additional Inherited	Members
       Static Public Member Functions inherited	from sc::SavableState
       static void save_state (SavableState *s,	StateOut &)
       static SavableState * restore_state (StateIn &si)
	   Restores objects saved with save_state.
       static SavableState * key_restore_state (StateIn	&si, const char
	   *keyword)
	   Like	restore_state, but keyword is used to override values while
	   restoring.
       static SavableState * dir_restore_state (StateIn	&si, const char
	   *objectname,	const char *keyword=0)

Detailed Description
       PsiWavefunction is an abstract base for all Psi wave functions.

       Its KeyVal constructor is invoked by all	KeyVal constructors of
       concrete	implementations	of PsiWavefunction.

Constructor & Destructor Documentation
   sc::PsiWavefunction::PsiWavefunction	(const Ref< KeyVal > &)
       The KeyVal constructor.

       psienv
	   Specifies a PsiExEnv	object.	There is no default.

       memory
	   This	 integer  specifies the	amount of memory (in bytes) for	Psi to
	   use.	The default is 2000000.

       debug
	   This	integer	can be used  to	 produce  output  for  debugging.  The
	   default is 0.

Member Function	Documentation
   void	sc::PsiWavefunction::compute ()	[virtual]
       Recompute  at  least  the  results  that	 have compute true and are not
       already computed. This should only be called by Result's	members.

       Implements sc::Compute.

   RefSymmSCMatrix sc::PsiWavefunction::density	() [virtual]
       Returns the SO density.

       Implements sc::Wavefunction.

   int sc::PsiWavefunction::nelectron () [virtual]
       Returns the number of electrons.

       Implements sc::Wavefunction.

   void	sc::PsiWavefunction::print  (std::ostream  &  =	 ExEnv::out0())	 const
       [virtual]
       Print information about the object.

       Reimplemented from sc::MolecularEnergy.

   void	sc::PsiWavefunction::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::MolecularEnergy.

       Reimplemented in	sc::PsiSCF, sc::PsiCCSD, and sc::PsiCCSD_T.

   virtual void	sc::PsiWavefunction::write_basic_input (int conv) [virtual]
       Writes out Psi input file entries specific to this PsiWavefunction. The
       input file is assumed to	have been opened.

       Reimplemented in	sc::PsiCLHF, sc::PsiHSOSHF, and	sc::PsiUHF.

   virtual   void  sc::PsiWavefunction::write_input  (int  conv)  [protected],
       [pure virtual]
       Prepares	a complete Psi input file. The input file is assumed  to  have
       been opened.

       Implemented in sc::PsiCLHF, sc::PsiHSOSHF, sc::PsiUHF, sc::PsiCCSD, and
       sc::PsiCCSD_T.

Author
       Generated automatically by Doxygen for MPQC from	the source code.

Version	2.3.1			Tue May	13 2025		sc::PsiWavefunction(3)

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