1 files changed, 5 insertions, 15 deletions
diff --git a/fib.kpl b/fib.kpl
index debb6f0..bf2d384 100644
--- a/fib.kpl
+++ b/fib.kpl
@@ -1,31 +1,21 @@
 
 /*
     Fibonacci sequence
-    n can be any numeric type
 */
 
-`export fib : ([n]
-    t : `type n
-    ? {
-        |(t = Int_signed; t = Float) {
-            ? n <= 0 { `return 0 }
-        }
-        t = Int_unsigned {
-            ? n = 0 { `return 0 }
-        }
-        { `panic "invalid type for n" }
-    }
+`export fib : ([I64; I64.n]
     ? {
+        n = 0 { 0 }
         n < 2 { 1 }
         { `sync(fib; n - 1) + fib `sync n - 2 }
     }
 )
 
-`export fib_string : ([n]
+`export fib_string : ([String; I64.n]
     "#MAGENTA#fib#(#CYAN#%#) #WHITE#=# #GREEN#%#\n" `format (n; fib `sync n)
 )
 
-`is_main ([]
+`is_main ([Void]
     `use "sys" [args]
     ? 3 != `length args {
         `return `error String $ (
@@ -33,5 +23,5 @@
             "#BOLD#WHITE#Usage: % % <n>#\n" `format (args `get 0; args `get 1)
          )
     }
-    `value fib_string `sync U64 $ args `get -1
+    `value fib_string `sync I64 $ args `get -1
 )