## SYNOPSIS

#include <tbintcints.h>

Inherits **sc::TwoBodyInt**.

## Public Member Functions

**TwoBodyIntCints** (**Integral** *integral, const **Ref**< **GaussianBasisSet** > &b1, const **Ref**< **GaussianBasisSet** > &b2, const **Ref**< **GaussianBasisSet** > &b3, const **Ref**< **GaussianBasisSet** > &b4, size_t storage, tbinteval int2etype)

int **log2_shell_bound** (int, int, int, int)

*Return log base 2 of the maximum magnitude of any integral in a shell block obtained from compute_shell. *

void **compute_shell** (int, int, int, int)

*Given four shell indices, integrals will be computed and placed in the buffer. *

size_t **used_storage** () const

void **set_integral_storage** (size_t storage)

*This storage is used to cache computed integrals. *

const double * **buffer** (**tbint_type** te_type) const

*The computed shell integrals will be put in the buffer returned by this member. *

## Protected Attributes

**Ref**< **Int2eCints** > **int2ecints_**

## Detailed Description

This implements electron repulsion integrals in the IntCints library.

## Member Function Documentation

## const double* sc::TwoBodyIntCints::buffer (**tbint_type** type) const [inline, virtual]

The computed shell integrals will be put in the buffer returned by this member. Some **TwoBodyInt** specializations have more than one buffer: The type arguments selects which buffer is returned. If the requested type is not supported, then 0 is returned.

Reimplemented from **sc::TwoBodyInt**.

## void sc::TwoBodyIntCints::compute_shell (int, int, int, int) [virtual]

Given four shell indices, integrals will be computed and placed in the buffer. The first two indices correspond to electron 1 and the second two indices correspond to electron 2.

Implements **sc::TwoBodyInt**.

## int sc::TwoBodyIntCints::log2_shell_bound (int, int, int, int) [virtual]

Return log base 2 of the maximum magnitude of any integral in a shell block obtained from compute_shell. An index of -1 for any argument indicates any shell.

Implements **sc::TwoBodyInt**.

## Author

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