Fibonacci numbers in Whitespace

Example for versions Whitespacers (Ruby)

This example is similar to factorial one, except for that it makes more use of stack data storage and duplicate command to avoid extra readings from memory cells. Also, in this case the counter is negative and increased at each iteration, as opposed to positive and compared to fixed number of iterations. 

push_1  { 	}
push_-16  {		    }
store		 push_2  { 	 }
push_44  { 	 		  }
store		 push_3  { 		}
push_32  { 	     }
store		 push_4  { 	  }
push_0  {	 }
store		 push_5  { 	 	}
push_1  { 	}
store		 label
  { }
start_loop_push_5  { 	 	}
push_4  { 	  }
retrieve			push_4  { 	  }
duplicate 
 push_5  { 	 	}
retrieve			duplicate 
 print_as_number	
 	push_2  { 	 }
retrieve			print_as_char	
  push_3  { 		}
retrieve			print_as_char	
  store		 retrieve			add	   store		 push_1  { 	}
duplicate 
 duplicate 
 duplicate 
 retrieve			add	   store		 retrieve			jump_if_negative
		{ }
push_10  { 	 	 }
push_46  { 	 			 }
duplicate 
 duplicate 
 print_as_char	
  print_as_char	
  print_as_char	
  print_as_char	
  quit


end