puts "============"
puts "OCC23706"
puts "============"
puts ""
#########################################################################
# Cannot project point on curve
#########################################################################

cpulimit 1500

bsplinecurve r3 2 6 1 3 2 1 3 1 4 1 5 1 6 3 2 5 3 1 3 7 3 1 4 8 3 1 4 8 3 1 4 8 3 1 5 9 3 1 9 7 3 1
bsplinecurve r4 2 6 2 3 2.5 1 3 1 3.5 1 4 1 4.5 3 -1 2 3 1 1 11 3 1 3 9 3 1 3 9 3 1 3 9 3 1 5 7 3 1 7 4 3 1

set info [extrema r3 r4] 

regexp {Extrema 1 is point : } $info full pp

if { $pp == "4 8 3"} {
    puts "Error : Point of extrema is wrong"
} else {
    puts "OK: Point of extrema is valid"
}
