NAME

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

SYNOPSIS

       #include <tbint.h>

       Inherits sc::RefCount.

   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 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.
       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.
       const double * buffer () const
           The computed shell integrals will be put in the buffer returned by this member.
       virtual void compute_shell (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)=0
           Return log base 2 of the maximum magnitude of any integral in a shell block.

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

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

Detailed Description

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

Member Function Documentation

   virtual int sc::TwoBodyTwoCenterDerivInt::log2_shell_bound (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.

Author

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