$ruby test_file.rb 40
user system total real
embbed rust
fib
0.267198 0.006861 0.274059 ( 0.282539)
fib_iter
0.000010 0.000001 0.000011 ( 0.000010)
fac
0.000007 0.000001 0.000008 ( 0.000007)
fac_i
0.000007 0.000001 0.000008 ( 0.000006)
just ruby
fib
6.882950 0.135102 7.018052 ( 7.190768)
fib_iter
0.000015 0.000005 0.000020 ( 0.000027)
fac
0.000019 0.000014 0.000033 ( 0.000037)
fac_i
0.000013 0.000002 0.000015 ( 0.000013)
$cargo build --release
then
$ruby benchmark_file.rb 40 # pass any positive mumber default 20
note you have to install ruby to run this examples
``