forked from sanshar/Dice
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Davidson.h
45 lines (34 loc) · 1.54 KB
/
Davidson.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/*
Developed by Sandeep Sharma with contributions from James E. T. Smith and Adam
A. Holmes, 2017 Copyright (c) 2017, Sandeep Sharma
This file is part of DICE.
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DAVIDSON_HEADER_H
#define DAVIDSON_HEADER_H
#include <Eigen/Core>
#include <Eigen/Dense>
#include <vector>
#include "global.h"
class Hmult2;
class HmultDirect;
using namespace Eigen;
using namespace std;
void precondition(MatrixXx& r, MatrixXx& diag, double& e);
vector<double> davidson(Hmult2& H, vector<MatrixXx>& x0, MatrixXx& diag,
int maxCopies, double tol, int& numIter, bool print);
vector<double> davidsonDirect(HmultDirect& Hdirect, vector<MatrixXx>& x0,
MatrixXx& diag, int maxCopies, double tol,
int& numIter, bool print);
double LinearSolver(Hmult2& H, double E0, MatrixXx& x0, MatrixXx& b,
vector<CItype*>& p, double tol, bool print);
#endif