sc::TwoBodyDerivInt(3)

NAME
sc::TwoBodyDerivInt - This is an abstract base type for classes that compute integrals involving two electrons.

SYNOPSIS

#include <tbint.h>

Inherits sc::RefCount.

Inherited by sc::TwoBodyDerivIntCCA, sc::TwoBodyDerivIntCints, and sc::TwoBodyDerivIntV3.

  Public Member Functions
int nbasis () const
Return the number of basis functions on center one.
int nbasis1 () const
Return the number of basis functions on center one.
int nbasis2 () const
Return the number of basis functions on center two.
int nbasis3 () const
Return the number of basis functions on center three.
int nbasis4 () const
Return the number of basis functions on center four.
int nshell () const
Return the number of shells on center one.
int nshell1 () const
Return the number of shells on center one.
int nshell2 () const
Return the number of shells on center two.
int nshell3 () const
Return the number of shells on center three.
int nshell4 () const
Return the number of shells on center four.
Ref< GaussianBasisSet > basis ()
Return the basis set on center one.
Ref< GaussianBasisSet > basis1 ()
Return the basis set on center one.
Ref< GaussianBasisSet > basis2 ()
Return the basis set on center two.
Ref< GaussianBasisSet > basis3 ()
Return the basis set on center three.
Ref< GaussianBasisSet > basis4 ()
Return the basis set on center four.
const double * buffer () const
The computed shell integrals will be put in the buffer returned by this member.
virtual void compute_shell (int, int, int, int, DerivCenters &)=0
Given for shell indices, this will cause the integral buffer to be filled in.
virtual int log2_shell_bound (int=-1, int=-1, int=-1, int=-1)=0
Return log base 2 of the maximum magnitude of any integral in a shell block.

  Protected Member Functions
TwoBodyDerivInt (Integral *integral, const Ref< GaussianBasisSet > &b1, const Ref< GaussianBasisSet > &b2, const Ref< GaussianBasisSet > &b3, const Ref< GaussianBasisSet > &b4)

  Protected Attributes
Integral * integral_
Ref< GaussianBasisSet > bs1_
Ref< GaussianBasisSet > bs2_
Ref< GaussianBasisSet > bs3_
Ref< GaussianBasisSet > bs4_
double * buffer_

Detailed Description

This is an abstract base type for classes that compute integrals involving two electrons.

Member Function Documentation

  virtual void sc::TwoBodyDerivInt::compute_shell (int, int, int, int, DerivCenters &) [pure virtual]

Given for shell indices, this will cause the integral buffer to be filled in.

Implemented in sc::TwoBodyDerivIntCints, sc::TwoBodyDerivIntCCA, and sc::TwoBodyDerivIntV3.

  virtual int sc::TwoBodyDerivInt::log2_shell_bound (int = -1, int = -1, int = -1, int = -1) [pure virtual]

Return log base 2 of the maximum magnitude of any integral in a shell block.

An index of -1 for any argument indicates any shell.

Implemented in sc::TwoBodyDerivIntCints, sc::TwoBodyDerivIntCCA, and sc::TwoBodyDerivIntV3.

Author

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