segment:   1.000   5.000
  3.000   5.000
segment:   5.000   5.000
  5.000   0.000
segments_intersect test
0
intersection point
  5.000   5.000
--------------------------------
segment:   1.000   5.000
  3.000   5.000
segment:   3.000   5.000
  3.000   0.000
segments_intersect test
1
intersection point
  3.000   5.000
--------------------------------
segment:   2.300   5.300
  5.700   6.800
segment:  12.100   3.400
  9.800   5.300
segments_intersect test
0
intersection point
  7.189   7.457
--------------------------------
segment:   1.000   5.000
  3.000   5.000
segment:   2.000   4.000
-17.000   4.000
segments_intersect test
0
intersection point
Error: Distinct parallel lines do not intersect.
  0.000   0.000
--------------------------------
segment:   0.000   0.000
  1.000   1.000
segment:   5.000   0.000
 10.000   5.000
segments_intersect test
0
intersection point
Error: Distinct parallel lines do not intersect.
  0.000   0.000
--------------------------------
segment:   0.000   0.000
 14.300  -4.300
segment:   0.000   0.000
 14.300  -4.300
segments_intersect test
1
intersection point
Warning: Identical lines, all points intersect.
  0.000   0.000
--------------------------------
segment:   2.000   2.000
  4.000   4.000
segment:   2.000   4.000
  4.000   2.000
segments_intersect test
1
intersection point
  3.000   3.000
--------------------------------
segment:   0.000   0.000
  5.000   5.000
segment:   2.000   2.000
  3.000   3.000
segments_intersect test
1
intersection point
Warning: Identical lines, all points intersect.
  0.000   0.000
--------------------------------
segment:   0.000   0.000
  5.000   5.000
segment:   2.000   2.000
  6.000   6.000
segments_intersect test
1
intersection point
Warning: Identical lines, all points intersect.
  0.000   0.000
--------------------------------
segment:   0.000   0.000
  2.000   2.000
segment:   5.000   5.000
  6.000   6.000
segments_intersect test
0
intersection point
Warning: Identical lines, all points intersect.
  0.000   0.000
--------------------------------