From a5eaebd622185092566ec364350d1e916324b270 Mon Sep 17 00:00:00 2001
From: Colby Klein <shakesoda@gmail.com>
Date: Wed, 1 Apr 2015 01:29:45 -0700
Subject: [PATCH] Add utils.is_pot(n) to check for power-of-two.

---
 modules/utils.lua | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/modules/utils.lua b/modules/utils.lua
index b3f8ef7..91cc57c 100644
--- a/modules/utils.lua
+++ b/modules/utils.lua
@@ -23,4 +23,10 @@ function utils.wrap(v, n)
 	return v % n
 end
 
+-- from undef: https://love2d.org/forums/viewtopic.php?p=182219#p182219
+-- check if a number is a power-of-two
+function utils.is_pot(n)
+  return 0.5 == (math.frexp(n))
+end
+
 return utils