atan2 Testing different implementation of Atan2 reference std implementation time: 0.315573 nvidia implementation time: 0.0226615 AVG error 1.21485e-06 Max error 3.51667e-06 cern implementation time: 0.192172 AVG error 2.38482e-08 Max error 2.38419e-07 fast implementation time: 0.00930621 AVG error 9.82156e-06 Max error 2.76566e-05 approx implementation time: 0.0960178 AVG error 0.00312734 Max error 0.00495219