JDFTx  1.2.1
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TranslationOperatorFourier Class Reference

The exact translation operator in PW basis, although much slower and with potential ringing issues. More...

#include <TranslationOperator.h>

Inheritance diagram for TranslationOperatorFourier:
TranslationOperator

Public Member Functions

 TranslationOperatorFourier (const GridInfo &gInfo)
 
void taxpy (const vector3<> &t, double alpha, const ScalarField &x, ScalarField &y) const
 
- Public Member Functions inherited from TranslationOperator
 TranslationOperator (const GridInfo &gInfo)
 

Additional Inherited Members

- Public Attributes inherited from TranslationOperator
const GridInfo & gInfo
 

Detailed Description

The exact translation operator in PW basis, although much slower and with potential ringing issues.

Member Function Documentation

void TranslationOperatorFourier::taxpy ( const vector3<> &  t,
double  alpha,
const ScalarField &  x,
ScalarField &  y 
) const
virtual

Compute $ y += alpha T_t(x) $ , where $ T_t $ is the translation operator $ T_t(x(r)) = x(r+t) $ modulo the lattice vectors T must conserve integral(x) and satisfy $ T^{\dagger}_t = T_{-t} $ exactly for gradient correctness Note that $ T^{-1}_t = T_{-t} $ may only be approximately true for some implementations.

Implements TranslationOperator.

The documentation for this class was generated from the following file: