Simplify min function, no need for a loop or table allocation.

Author: profan

bk-tree.lua

@@ -23,16 +23,12 @@ local function lazy_copy(t1)
 
 end
 
-local function min(...)
+local function min(a, b, c)
 
-	local args = {...}
-	local min_val = args[1]
+	local min_val = a
 
-	for i=1, #args do
-		if min_val > args[i] then
-			min_val = args[i]
-		end
-	end
+	if b < min_val then min_val = b end
+	if c < min_val then min_val = c end
 
 	return min_val