.TH "sc::TwoBodyDerivInt" 3 "Sun Oct 4 2020" "Version 2.3.1" "MPQC" \" -*- nroff -*-
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.SH NAME
sc::TwoBodyDerivInt \- This is an abstract base type for classes that compute integrals involving two electrons\&.  

.SH SYNOPSIS
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.PP
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\fC#include <tbint\&.h>\fP
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Inherits \fBsc::RefCount\fP\&.
.PP
Inherited by \fBsc::TwoBodyDerivIntCCA\fP, \fBsc::TwoBodyDerivIntCints\fP, and \fBsc::TwoBodyDerivIntV3\fP\&.
.SS "Public Member Functions"

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.RI "int \fBnbasis\fP () const"
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.RI "Return the number of basis functions on center one\&. "
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.RI "int \fBnbasis1\fP () const"
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.RI "Return the number of basis functions on center one\&. "
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.RI "int \fBnbasis2\fP () const"
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.RI "Return the number of basis functions on center two\&. "
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.RI "int \fBnbasis3\fP () const"
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.RI "Return the number of basis functions on center three\&. "
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.RI "int \fBnbasis4\fP () const"
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.RI "Return the number of basis functions on center four\&. "
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.RI "int \fBnshell\fP () const"
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.RI "Return the number of shells on center one\&. "
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.RI "int \fBnshell1\fP () const"
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.RI "Return the number of shells on center one\&. "
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.RI "int \fBnshell2\fP () const"
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.RI "Return the number of shells on center two\&. "
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.RI "int \fBnshell3\fP () const"
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.RI "Return the number of shells on center three\&. "
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.RI "int \fBnshell4\fP () const"
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.RI "Return the number of shells on center four\&. "
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbasis\fP ()"
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.RI "Return the basis set on center one\&. "
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbasis1\fP ()"
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.RI "Return the basis set on center one\&. "
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbasis2\fP ()"
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.RI "Return the basis set on center two\&. "
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbasis3\fP ()"
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.RI "Return the basis set on center three\&. "
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbasis4\fP ()"
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.RI "Return the basis set on center four\&. "
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.RI "const double * \fBbuffer\fP () const"
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.RI "The computed shell integrals will be put in the buffer returned by this member\&. "
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.RI "virtual void \fBcompute_shell\fP (int, int, int, int, \fBDerivCenters\fP &)=0"
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.RI "Given for shell indices, this will cause the integral buffer to be filled in\&. "
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.RI "virtual int \fBlog2_shell_bound\fP (int=\-1, int=\-1, int=\-1, int=\-1)=0"
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.RI "Return log base 2 of the maximum magnitude of any integral in a shell block\&. "
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.SS "Protected Member Functions"

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.RI "\fBTwoBodyDerivInt\fP (\fBIntegral\fP *integral, const \fBRef\fP< \fBGaussianBasisSet\fP > &b1, const \fBRef\fP< \fBGaussianBasisSet\fP > &b2, const \fBRef\fP< \fBGaussianBasisSet\fP > &b3, const \fBRef\fP< \fBGaussianBasisSet\fP > &b4)"
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.SS "Protected Attributes"

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.RI "\fBIntegral\fP * \fBintegral_\fP"
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbs1_\fP"
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbs2_\fP"
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbs3_\fP"
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.RI "\fBRef\fP< \fBGaussianBasisSet\fP > \fBbs4_\fP"
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.RI "double * \fBbuffer_\fP"
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.SH "Detailed Description"
.PP 
This is an abstract base type for classes that compute integrals involving two electrons\&. 
.SH "Member Function Documentation"
.PP 
.SS "virtual int sc::TwoBodyDerivInt::log2_shell_bound (int = \fC\-1\fP, int = \fC\-1\fP, int = \fC\-1\fP, int = \fC\-1\fP)\fC [pure virtual]\fP"

.PP
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\&. 
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.PP
Implemented in \fBsc::TwoBodyDerivIntV3\fP, \fBsc::TwoBodyDerivIntCCA\fP, and \fBsc::TwoBodyDerivIntCints\fP\&.
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Referenced by sc::LocalTBGrad< T >::run()\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for MPQC from the source code\&.