1 files changed, 5 insertions, 11 deletions
diff --git a/ack.kpl b/ack.kpl
index 2161836..bba01ea 100644
--- a/ack.kpl
+++ b/ack.kpl
@@ -1,26 +1,20 @@
 
 // Ackermann function
 
-`export ack : ([m; n]
-    t : `type m;
-    ? t != `type n {
-        `panic "m and n must be the same type"
-    }
-    ? |(t = Int_signed; t = Float) {
-        ? |(m < 0; n < 0) { `return 0 }
-    }
+`export ack : ([I64; I64.m; I64.n]
     ? {
+        |(m < 0; n < 0) { 0 }
         m = 0 { n + 1 }
         &(m > 0; n = 0) { ack `sync (m - 1; 1) }
         { ack `sync (m - 1; ack `sync (m; n - 1)) }
     }
 )
 
-`export ack_string : ([m; n]
+`export ack_string : ([String; I64.m; I64.n]
     "#MAGENTA#ack#(#CYAN#%#, #CYAN#%#) #WHITE#=# #GREEN#%#\n" `format (m; n; ack `sync (m; n))
 )
 
-`is_main ([]
+`is_main ([Void]
     `use "sys" [args]
     ? 4 != `length args {
          `return `error String $ (
@@ -28,5 +22,5 @@
             "#BOLD#WHITE#Usage: % % <m> <n>#\n" `format (args `get 0; args `get 1)
          )
     }
-    `value ack_string `sync (U64 $ args `get -2; U64 $ args `get -1)
+    `value ack_string `sync (I64 $ args `get -2; I64 $ args `get -1)
 )