added tostr

typeconversion.sl

@@ -1,5 +1,6 @@
 import stdlib.sl
 import io.sl
+import mem.sl
 
 word digitsN>num  # ( d_{n-1} ... d0 n -- value ), digits bottom=MSD, top=LSD, length on top (MSD-most significant digit, LSD-least significant digit)
     0 swap        # place accumulator below length
@@ -34,6 +35,50 @@ word toint
     rdrop
 end
 
-word main
-    "1234" toint 1 + puti cr
+word count_digits
+    0
+    swap
+    while dup 0 > do
+        10 / swap 1 + swap
+    end
+    drop
+end
+
+word tostr
+    dup
+    count_digits
+    2dup >r alloc
+    nip swap rot swap
+    for
+        dup 10 % swap 10 /
+    end
+    drop
+
+    r>
+    1 swap dup
+    for
+        dup
+        2 + pick
+        2 pick
+        2 + pick
+        3 pick rot +
+        swap 48 + c!
+        drop
+        swap
+        1 +
+        swap
+    end
+
+    swap 0 +
+    pick 1 +
+    over for
+    rot drop
+    end drop
+    swap 1 + swap puts
+end
+
+word main
+    "1234" toint 1 + dup puti cr
+    tostr
+    puts
 end