1 files changed, 1 insertions, 0 deletions
diff --git a/public/assets/js/vendor/util.js b/public/assets/js/vendor/util.js
index 34ef45f..b08a914 100644
--- a/public/assets/js/vendor/util.js
+++ b/public/assets/js/vendor/util.js
@@ -71,6 +71,7 @@ function mod(n,m){ return n-(m * floor(n/m)) }
 function dist(x0,y0,x1,y1){ return sqrt(pow(x1-x0,2)+pow(y1-y0,2)) }
 function angle(x0,y0,x1,y1){ return atan2(y1-y0,x1-x0) }
 function avg(m,n,a){ return (m*(a-1)+n)/a }
+function cmp (a,b){ return (a<b)?-1:(a===b)?0:1 }
 function noop(){}
 
 function pixel(x,y){ return 4*(mod(y,actual_h)*actual_w+mod(x,actual_w)) }