puts "========"
puts "0031407: Extrema does not process parallel circles correctly"
puts "========"
puts ""

circle c1  0 0 0  0 0 1  5
circle c2  0 0 0  0 0 1  10

if { [regexp "Infinite number of extremas" [extrema c1 c2]] == 1} {
  puts "OK : Circles are treated as concentric"
} else {
  puts "Error : Extrema does not find the circles are parallel"
}