From f9af08ce5ae634ea5d62a80adbce37dacc75f206 Mon Sep 17 00:00:00 2001
From: Jonathan Olson <olsonsjc@gmail.com>
Date: Tue, 23 Jun 2015 14:18:00 -0600
Subject: [PATCH] Math.round => Util.roundSymmetric, see
 https://github.com/phetsims/tasks/issues/275

---
 js/common/view/FrictionSliderNode.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/js/common/view/FrictionSliderNode.js b/js/common/view/FrictionSliderNode.js
index 3efd357..48336ef 100644
--- a/js/common/view/FrictionSliderNode.js
+++ b/js/common/view/FrictionSliderNode.js
@@ -15,6 +15,7 @@ define( function( require ) {
   var PhetFont = require( 'SCENERY_PHET/PhetFont' );
   var Property = require( 'AXON/Property' );
   var Range = require( 'DOT/Range' );
+  var Util = require( 'DOT/Util' );
   var Text = require( 'SCENERY/nodes/Text' );
 
   // strings
@@ -30,7 +31,7 @@ define( function( require ) {
   }
 
   function frictionToSliderValue( friction ) {
-    return Math.round( Math.log( friction / 0.0005 + 1 ) / Math.LN2 );
+    return Util.roundSymmetric( Math.log( friction / 0.0005 + 1 ) / Math.LN2 );
   }
 
   /**
@@ -68,12 +69,12 @@ define( function( require ) {
         frictionProperty.value = sliderValueToFriction( sliderValue );
       }
       else {
-        sliderValueProperty.value = Math.round( sliderValue );
+        sliderValueProperty.value = Util.roundSymmetric( sliderValue );
       }
     } );
 
     frictionProperty.lazyLink( function( frictionValue ) {
-      sliderValueProperty.value = Math.round( frictionToSliderValue( frictionValue ) );
+      sliderValueProperty.value = Util.roundSymmetric( frictionToSliderValue( frictionValue ) );
     } );
   }