From 6f93d32fba2c1ce1f074bc339c52c27894b39740 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sat, 23 Apr 2016 13:21:45 +0200
Subject: tracker/pt: add caveat to POSIT

causes breakage. even with denormal flush to zero it's not correct to
compare to epsilon.
---
 tracker-pt/point_tracker.cpp | 1 +
 1 file changed, 1 insertion(+)
 mode change 100644 => 100755 tracker-pt/point_tracker.cpp

diff --git a/tracker-pt/point_tracker.cpp b/tracker-pt/point_tracker.cpp
old mode 100644
new mode 100755
index 599ce2d3..493f311c
--- a/tracker-pt/point_tracker.cpp
+++ b/tracker-pt/point_tracker.cpp
@@ -194,6 +194,7 @@ int PointTracker::POSIT(const PointModel& model, const PointOrder& order_, float
         float IJ0 = I0.dot(J0);
         float JJ0 = J0.dot(J0);
         float rho, theta;
+        // CAVEAT don't change to comparison with a small epsilon, e.g. 1e-4. -sh 20160423
         if (JJ0 == II0) {
             rho = std::sqrt(std::abs(2*IJ0));
             theta = -PI/4;
-- 
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