GEOS  3.13.0dev
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.
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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.
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15  *
16  * Last port: algorithm/RobustDeterminant.java 1.15 (JTS-1.10)
17  *
18  **********************************************************************/
19 
20 #pragma once
21 
22 #include <geos/export.h>
23 
24 namespace geos {
25 namespace algorithm { // geos::algorithm
26 
50 class GEOS_DLL RobustDeterminant {
51 public:
52 
61  static int signOfDet2x2(double x1, double y1, double x2, double y2);
62 };
63 
64 } // namespace geos::algorithm
65 } // namespace geos
66 
Implements an algorithm to compute the sign of a 2x2 determinant for double precision values robustly...
Definition: RobustDeterminant.h:50
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: Angle.h:25