Special factorials: Difference between revisions

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@@ Line 132: / Line 132: @@
 function reverse_factorial(n)
-    for i in 1:100000
+    n == 1 && return 0
-        fac = factorial(typeof(n)(i))
+    fac = one(n)
+    for i in 2:10000
+        fac = *= i
         fac == n && return i
         fac > n && break
@@ Line 178: / Line 180: @@
 N  Reverse Factorial
 -------------------------
-1
+0
 2
 3