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sc::Int2eCints(3)		      MPQC		       sc::Int2eCints(3)

NAME
     sc::Int2eCints  -	Int2eCints is an interface to various specializations of
     two-electron integral evaluators implemented in Cints.

SYNOPSIS
     #include <int2e.h>

     Inherits sc::RefCount.

     Inherited by sc::EriCints, and sc::GRTCints.

   Public Member Functions
     Int2eCints (Integral *, const Ref< GaussianBasisSet > &, const  Ref<  Gaus-
	 sianBasisSet > &, const Ref< GaussianBasisSet > &, const Ref< Gaussian-
	 BasisSet > &, size_t storage)
     void init_storage (size_t)
	 Sets storage limit and starts storage tracking.
     void done_storage ()
	 Finishes storage tracking.
     size_t storage_used () const
	 Reports how much storage is actually used at a given time.
     int redundant () const
	 Whether redundant integrals are returned.
     void set_redundant (int flag)
	 Set redundant flag.
     int permute () const
	 Whether shells can be permuted.
     void set_permute (int flag)
	 Set shell permutation flag.
     virtual void compute_quartet (int *, int *, int *, int *)=0
	 Evaluate the target quartet of integrals.
     virtual double * buffer (TwoBodyInt::tbint_type=TwoBodyInt::eri) const =0
	 Returns the location of the buffer with target integrals.
     Ref< GaussianBasisSet > basis ()
     Ref< GaussianBasisSet > basis1 ()
     Ref< GaussianBasisSet > basis2 ()
     Ref< GaussianBasisSet > basis3 ()
     Ref< GaussianBasisSet > basis4 ()

     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.

   Protected Member Functions
     void check_storage_ () const
     void transform_contrquartets_ (double *, double *)
     void sort_contrquartets_to_shellquartet_ (double *, double *)
     void permute_target_ (double *, double *, int, int, int)
     void permute_1234_to_1243_ (double *, double *)
     void permute_1234_to_2134_ (double *, double *)
     void permute_1234_to_2143_ (double *, double *)
     void permute_1234_to_3412_ (double *, double *)
     void permute_1234_to_3421_ (double *, double *)
     void permute_1234_to_4312_ (double *, double *)
     void permute_1234_to_4321_ (double *, double *)
     void get_nonredundant_ints_ (double *, double *, int, int, int)

     Protected Member Functions inherited from sc::RefCount
     RefCount (const RefCount &)
     RefCount & operator= (const RefCount &)

   Static Protected Member Functions
     static  size_t  storage_required_ (const Ref< GaussianBasisSet > &b1, const
	 Ref< GaussianBasisSet > &b2=0, const  Ref<  GaussianBasisSet  >  &b3=0,
	 const Ref< GaussianBasisSet > &b4=0)

   Protected Attributes
     Integral * integral_
     Ref< GaussianBasisSet > bs1_
     Ref< GaussianBasisSet > bs2_
     Ref< GaussianBasisSet > bs3_
     Ref< GaussianBasisSet > bs4_
     Ref< MessageGrp > grp_
     GaussianShell * int_shell1_
     GaussianShell * int_shell2_
     GaussianShell * int_shell3_
     GaussianShell * int_shell4_
     int permute_
     int redundant_
     size_t storage_
     size_t storage_used_
     double * tformbuf_

Detailed Description
     Int2eCints is an interface to various specializations of two-electron inte-
     gral evaluators implemented in Cints.

     It  is  used by TwoBodyIntCints and TwoBodyDerivIntCints to implement Inte-
     gralCints.

Member Function Documentation
   virtual  double  *  sc::Int2eCints::buffer  (TwoBodyInt::tbint_type	=   Two-
     BodyInt::eri) const [pure virtual]
     Returns the location of the buffer with target integrals.

     Implemented in sc::EriCints, and sc::GRTCints.

   virtual  void  sc::Int2eCints::compute_quartet  (int  *, int *, int *, int *)
     [pure virtual]
     Evaluate the target quartet of integrals.

     Implemented in sc::EriCints, and sc::GRTCints.

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

Version 2.3.1			 Thu Sep 3 2026 	       sc::Int2eCints(3)
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