blob: 22ae13e0677d35695b1f8edfc05922808065bcf6 (
plain)
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
46
47
48
49
50
51
52
53
|
/** \file \ingroup smoke
*/
//////////////////////////////////////////////////////////////////////
// This file is part of Wavelet Turbulence.
//
// Wavelet Turbulence 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.
//
// Wavelet Turbulence 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 Wavelet Turbulence. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright 2008 Theodore Kim and Nils Thuerey
//
//////////////////////////////////////////////////////////////////////
// Modified to not require TNT matrix library anymore. It was very slow
// when being run in parallel. Required TNT JAMA:LU libraries were
// converted into independent functions.
// - MiikaH
//////////////////////////////////////////////////////////////////////
#ifndef LU_HELPER_H
#define LU_HELPER_H
#include <cmath>
#include <algorithm>
using namespace std;
//////////////////////////////////////////////////////////////////////
// Helper function, compute eigenvalues of 3x3 matrix
//////////////////////////////////////////////////////////////////////
struct sLU
{
float values[3][3];
int pivsign;
int piv[3];
};
int isNonsingular (sLU LU_);
sLU computeLU( float a[3][3]);
void solveLU3x3(sLU& A, float x[3], float b[3]);
#endif
|
