DOKK / manpages / debian 11 / libsc-doc / sc_SumDenFunctional.3.en
sc::SumDenFunctional(3) MPQC sc::SumDenFunctional(3)

sc::SumDenFunctional - The SumDenFunctional computes energies and densities using the a sum of energy density functions method.

#include <functional.h>

Inherits sc::DenFunctional.

Inherited by sc::StdDenFunctional.


SumDenFunctional (const Ref< KeyVal > &)
This KeyVal constructor reads the following keywords: SumDenFunctional (StateIn &)
void save_data_state (StateOut &)
Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR initializes them. void set_spin_polarized (int)
void set_compute_potential (int)
int need_density_gradient ()
void point (const PointInputData &, PointOutputData &)
void print (std::ostream &=ExEnv::out0()) const
Print the object. double a0 () const
Override the DenFunctional::a0() member, so that a0's in contributing functionals can be added in as well.


int n_
Ref< DenFunctional > * funcs_
double * coefs_

The SumDenFunctional computes energies and densities using the a sum of energy density functions method.

This KeyVal constructor reads the following keywords:

funcs
Specifies an array of DenIntegrator objects.
coefs
Specifies the coefficient of each DenIntegrator object.
a0
Specifies the coefficient of the Hartree-Fock exchange. This is nonzero for hybrid functionals. The default is zero.

For example, the B3LYP functional can be specified with the following input:

functional<SumDenFunctional>: (

a0 = 0.2
coefs = [ 0.8 0.72 0.19 0.81 ]
funcs: [
<SlaterXFunctional>:()
<Becke88XFunctional>:()
<VWN1LCFunctional>:( rpa = 1 )
<LYPCFunctional>:()
] )

Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR initializes them. This must be implemented by the derived class if the class has data.

Reimplemented from sc::DenFunctional.

Reimplemented in sc::StdDenFunctional.

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Sun Oct 4 2020 Version 2.3.1