GEOS 3.9.1
RobustDeterminant.h
1/**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2005-2006 Refractions Research Inc.
7 * Copyright (C) 2001-2002 Vivid Solutions Inc.
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************
15 *
16 * Last port: algorithm/RobustDeterminant.java 1.15 (JTS-1.10)
17 *
18 **********************************************************************/
19
20#ifndef GEOS_ALGORITHM_ROBUSTDETERMINANT_H
21#define GEOS_ALGORITHM_ROBUSTDETERMINANT_H
22
23#include <geos/export.h>
24
25namespace geos {
26namespace algorithm { // geos::algorithm
27
51class GEOS_DLL RobustDeterminant {
52public:
53
62 static int signOfDet2x2(double x1, double y1, double x2, double y2);
63};
64
65} // namespace geos::algorithm
66} // namespace geos
67
68
69
70#endif // GEOS_ALGORITHM_ROBUSTDETERMINANT_H
Implements an algorithm to compute the sign of a 2x2 determinant for double precision values robustly...
Definition RobustDeterminant.h:51
static int signOfDet2x2(double x1, double y1, double x2, double y2)
Computes the sign of the determinant of the 2x2 matrix with the given entries, in a robust way.
Basic namespace for all GEOS functionalities.
Definition IndexedNestedRingTester.h:26