Can somebody give some tests?
 Thank you..

input
0 30
-25.9807621135 -15
25.9807621135 -15
output
-8.2902573694809689e-012 -4.7855053253442748e-012
8.0829037686437069 13.999999999999361
16.165807537287968 -3.1885605267234496e-013
-1.6580514738954005e-011 -29.999999999980858
-25.980762113541445 15.000000000004786
25.980762113533153 15.000000000019146




input
0 0
5 8.6602540378443864676372317075294
10 0
output
5 2.8867513459481291
3.9106836025229588 0.99999999999999989
6.0893163974770417 0.99999999999999989
10 5.7735026918962582
0 5.7735026918962582
5 -2.8867513459481291

WA1 could also be too low output precision!