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sc::DIIS Class Reference

The DIIS class provides DIIS extrapolation. More...

#include <diis.h>

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List of all members.

Public Methods

 DIIS (int strt=1, int ndi=5, double dmp=0, int ngr=1, int ngrdiis=1)
 DIIS (StateIn &)
 DIIS (const Ref< KeyVal > &)
 The DIIS KeyVal constructor recognizes the following keywords:. More...

 ~DIIS ()
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. More...

int extrapolate (const Ref< SCExtrapData > &data, const Ref< SCExtrapError > &error)
void start_extrapolation ()
void reinitialize ()

Protected Methods

void init ()

Protected Attributes

int start
int ndiis
int iter
int ngroup
int ngroupdiis
double damping_factor
double * btemp
double ** bold
double ** bmat
Ref< SCExtrapDatadtemp_data
Ref< SCExtrapErrordtemp_error
Ref< SCExtrapDataLdata
Ref< SCExtrapData > * diism_data
Ref< SCExtrapError > * diism_error

Detailed Description

The DIIS class provides DIIS extrapolation.


Constructor & Destructor Documentation

sc::DIIS::DIIS const Ref< KeyVal > &   
 

The DIIS KeyVal constructor recognizes the following keywords:.

n
This integer maximum number of data sets to retain. The default is 5.

start
The DIIS extrapolation will begin on the iteration given by this integer. The default is 1.

damping_factor
This nonnegative floating point number is used to dampen the DIIS extrapolation. The default is 0.0.

ngroup
The number of iterations in a DIIS group. DIIS extrapolation is only used for the first ngroupdiis of these interations. The default is 1. If ngroup is 1 and ngroupdiis is greater than 0, then DIIS will be used on all iterations after and including the start iteration.

ngroupdiis
The number of DIIS extrapolations to do at the beginning of an iteration group. See the documentation for ngroup.


Member Function Documentation

void sc::DIIS::save_data_state StateOut   [virtual]
 

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::SelfConsistentExtrapolation.


The documentation for this class was generated from the following file:
Generated at Fri Jan 10 08:14:42 2003 for MPQC 2.1.3 using the documentation package Doxygen 1.2.14.