OCCT

puts "========"
puts "OCC26099"
puts "========"
puts ""
##################################################
# Wrong result done by 2d intersection algorithm
##################################################

restore [locate_data_file OCC26099-f.brep] f
explode f e
pcurve c4 f_4 f
pcurve c5 f_5 f
set bug_info [2dintersect c4 c5]

if {[regexp {fist: ([\-0-9.]*) .*second: ([\-0-9.]*)} $bug_info dummy par1 par2] == 0} {
  puts "ERROR: OCC26099 is reproduced. No intersection."
}

set refpar1 0.98989794855663704
set refpar2 0
if {[expr abs($par1-$refpar1)] > 0.0001 || [expr abs($par2-$refpar2)] > 0.0001} {
  puts "ERROR: OCC26099 is reproduced. Parameters are $par1 and $par2, expected $refpar1 and $refpar2"
}