###########  fibonacci
# 
( 1 

  /spur fib
	ldarg 0
	int 2
	ifge 1
	# less than 2
	int 1
	stvar 0
	return

	# 2 or more
1
	ldarg 0
	int 1
	sub
	call fib 1 1

	ldarg 0
	int 2
	sub
	call fib 1 1

	add
	stvar 0
	return
)
( 1
  /spur main
   int 30
   call fib 1 1
   stvar 0
   return
)