# sc_CartesianIter - Man Page

CartesianIter gives the ordering of the Cartesian functions within a shell for the particular integrals specialization.

## Synopsis

`#include <cartiter.h>`

Inherited by MPQC::CartesianIterCCA, sc::CartesianIterCCA, sc::CartesianIterCints, and sc::CartesianIterV3.

### Public Member Functions

CartesianIter (int l)
Initialize an iterator for the given angular momentum.
virtual void start ()=0
Start the iteration.
virtual void next ()=0
Move to the next Cartesian function.
virtual operator int ()=0
Returns nonzero if the iterator currently hold valid data.
int n ()
Returns the number of Cartesian functions.
int a ()
Returns the exponent of x.
int b ()
Returns the exponent of y.
int c ()
Returns the exponent of z.
int l ()
Returns the angular momentum.
int l (int i)
Returns a() if i==0, b() if i==1, and c() if i==2.
int bfn ()
Returns the number of the current basis function within the shell.

int a_
int b_
int c_
int l_
int bfn_

## Detailed Description

CartesianIter gives the ordering of the Cartesian functions within a shell for the particular integrals specialization.

## Member Function Documentation

### int sc::CartesianIter::bfn () [inline]

Returns the number of the current basis function within the shell. This starts at 0 and sequentially increases as next() is called.

### virtual void sc::CartesianIter::next () [pure virtual]

Move to the next Cartesian function.

Implemented in MPQC::CartesianIterCCA, sc::CartesianIterCints, sc::CartesianIterCCA, and sc::CartesianIterV3.

### virtual sc::CartesianIter::operator int () [pure virtual]

Returns nonzero if the iterator currently hold valid data.

Implemented in MPQC::CartesianIterCCA, sc::CartesianIterCints, sc::CartesianIterCCA, and sc::CartesianIterV3.

### virtual void sc::CartesianIter::start () [pure virtual]

Start the iteration.

Implemented in MPQC::CartesianIterCCA, sc::CartesianIterCints, sc::CartesianIterCCA, and sc::CartesianIterV3.

## Author

Generated automatically by Doxygen for MPQC from the source code.

## Info

Thu Jan 19 2023 Version 2.3.1 MPQC