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

2dbsplinecurve b9 2 8 1 2 2 1 3 1 4 1 5 1 6 1 7 1 8 2 4 -3 1 6 8 1 10 11 1 10 11 1 10 11 1 14 14 1 5 8 1
2dbsplinecurve b10 2 8 2 2 2.5 1 3 1 3.5 1 4 1 4.5 1 5 1 5.5 2 5 20 1 8 15 1 12 18 1 12 18 1 12 18 1 16 21 1 7 12 1
set info [2dextrema b9 b10]

set status 0
for { set i 1 } { $i <= 1 } { incr i 1 } {
    regexp "dist $i: +(\[-0-9.+eE\]+)" $info full pp
    if { abs($pp - 3.6710534171261284) > 1.0e-7 } {
       puts "Error : Extrema is wrong on dist $i"
       set status 1
    }
}

if { $status != 0 } {
    puts "Error : Extrema is wrong"
} else {
    puts "OK: Extrema is valid"
}