[UPDATE] license info. Use SPDX license identifier. Remove unneeded v…

…ariable.

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014-2015 Athan Reines.
+Copyright (c) 2014-2015 The Compute.io Authors. All rights reserved.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -5,6 +5,14 @@
 # Set the node.js environment to test:
 NODE_ENV ?= test
 
+# Kernel name:
+KERNEL ?= $(shell uname -s)
+
+ifeq ($(KERNEL), Darwin)
+	OPEN ?= open
+else
+	OPEN ?= xdg-open
+endif
 
 # NOTES #
 
@@ -98,8 +106,7 @@ test-istanbul-mocha: node_modules
 view-cov: view-istanbul-report
 
 view-istanbul-report:
-	open $(ISTANBUL_HTML_REPORT_PATH)
-
+	$(OPEN) $(ISTANBUL_HTML_REPORT_PATH)
 
 
 # LINT #

README.md

@@ -93,8 +93,6 @@ $ node ./examples/index.js
 
 
 
-
-
 ## Tests
 
 ### Unit
@@ -130,7 +128,7 @@ $ make view-cov
 
 ## Copyright
 
-Copyright © 2014-2015. Athan Reines.
+Copyright © 2014-2015. The Compute.io Authors.
 
 
 [npm-image]: http://img.shields.io/npm/v/compute-incrmmean.svg

lib/index.js

@@ -22,14 +22,13 @@ function incrmmean( W ) {
 		mu = 0,
 		N = 0,
 		i = -1,
-		delta,
-		tmp;
+		delta;
 	/**
 	* FUNCTION: incrmmean( [value] )
 	*	If a `value` is provided, updates and returns the updated mean. If no `value` is provided, returns the current mean.
 	*
 	* @param {Number} [value] - value used to update the moving mean
-	* @returns {Number} mean
+	* @returns {Number|Null} mean or null
 	*/
 	return function incrmmean( x ) {
 		if ( !arguments.length ) {
@@ -43,16 +42,14 @@ function incrmmean( W ) {
 
 		// Fill up the initial window; else, update the existing window...
 		if ( N < W ) {
-			arr[ i ] = x;
 			N += 1;
 			delta = x - mu;
 			mu += delta / N;
 		} else {
-			tmp = arr[ i ];
-			arr[ i ] = x;
-			delta = x - tmp;
+			delta = x - arr[ i ];
 			mu += delta / W;
 		}
+		arr[ i ] = x;
 		return mu;
 	};
 } // end FUNCTION incrmmean()

package.json

@@ -40,7 +40,11 @@
     "arithmetic mean",
     "moving mean",
     "moving average",
-    "sliding window"
+    "sliding window",
+    "arithmetic",
+    "sliding",
+    "window",
+    "moving"
   ],
   "bugs": {
     "url": "https://github.com/compute-io/incrmmean/issues"
@@ -56,10 +60,5 @@
     "jshint": "2.x.x",
     "jshint-stylish": "^1.0.0"
   },
-  "licenses": [
-    {
-      "type": "MIT",
-      "url": "http://www.opensource.org/licenses/MIT"
-    }
-  ]
+  "license": "MIT"
 }

test/test.js

@@ -29,6 +29,7 @@ describe( 'compute-incrmmean', function tests() {
 			'5',
 			-5,
 			0,
+			Math.PI,
 			true,
 			null,
 			undefined,