Implements an algorithm to compute the sign of a 2x2 determinant for double precision values robustly. More...
#include <RobustDeterminant.h>
Static Public Member Functions | |
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. |
Implements an algorithm to compute the sign of a 2x2 determinant for double precision values robustly.
It is a direct translation of code developed by Olivier Devillers.
The original code carries the following copyright notice:
The original code carries the following copyright notice: Author : Olivier Devillers Olivier.Devillers@sophia.inria.fr http:/www.inria.fr:/prisme/personnel/devillers/anglais/determinant.html
Copyright (c) 1995 by INRIA Prisme Project BP 93 06902 Sophia Antipolis Cedex, France. All rights reserved
static int geos::algorithm::RobustDeterminant::signOfDet2x2 | ( | double | x1, | |
double | y1, | |||
double | x2, | |||
double | y2 | |||
) | [static] |
Computes the sign of the determinant of the 2x2 matrix with the given entries, in a robust way.