add some comment and tests (but small bugs still there)

test/runners/fibo_while.rb

@@ -1,13 +1,13 @@
-def fibonaccit(n)
-  a = 0 
-  b = 1
-  while( n > 1 ) do
-    tmp = a
-    a = b
-    b = tmp + b
-    putstring(b)
-    n = n - 1
-  end
+def fibonaccit(n) # n == r0
+  a = 0           # a == r1
+  b = 1           # b = r2
+  while( n > 1 ) do                   #BUG comment lines + comments behind function calls
+    tmp = a       # r3 <- r1
+    a = b         # r1 <- r2
+    b = tmp + b   #  r4 = r2 + r3  (r4 transient)  r2 <- r4 
+    putstring(b)   
+    n = n - 1      # r2 <- 0   ????   #call ok  
+  end             #r5 <- r0 - 1                  # r0 <- r5
 end
 
 fibonaccit( 10 )