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

set x 3.999999652077201
set y 5.0000000062915735
set z 5.00002142991819367
set pp_ch 0.99910795389207607

restore [locate_data_file bug23706_c.draw] c
set info [proj c $x $y $z]

regexp {parameter 1 += +([-0-9.+eE]+)} $info full pp
if { $pp != $pp_ch } {
   puts "Error : Projection is not correct"
} else {
   puts "OK: Projection is correct"
}