boost::geometry::remove_spikes doesn't remove spike

[xiongzubiao@…]

In the following example, the fourth point is actually a spike. remove_spikes does not remove it.

#include <iostream>
#include <boost/geometry.hpp>
#include <boost/geometry/geometries/geometries.hpp>

namespace bg = boost::geometry;

int main()
{
	typedef bg::model::point<double, 2, bg::cs::cartesian> point_t;
	typedef bg::model::polygon<point_t> polygon_t;
	polygon_t poly{ { { 0.08039, 0.08076 },{ 0.836, 2.343 },
		{ 2.24, 1.874 },{ 1.452,-0.485 },{ 1.485, -0.3882 } } };
	bg::correct(poly);
	bg::remove_spikes(poly);

	return 0
}