integrated array normalizer into vec

2 files changed, 4 insertions, 8 deletions

diff --git a/utils/norm.js b/utils/norm.js
deleted file mode 100644
index a1a4fb3..0000000
--- a/utils/norm.js
+++ /dev/null
@@ -1,8 +0,0 @@
-// Normalizes an array of numbers such that they sum to one
-
-module.exports = function(arr){ // Modifies arr
-  let sum = arr.reduce( (acc, cur) => arr+cur );
-  for (elem of arr)
-    elem = elem/sum;
-  return arr;
-}
diff --git a/utils/vec.js b/utils/vec.js
index f4a625c..3996fc2 100644
--- a/utils/vec.js
+++ b/utils/vec.js
@@ -27,3 +27,7 @@ exports.dot = function(orig,vec){
 exports.tileToChar = function(orig){
   return exports.dot(orig, [8,16]);
 }
+exports.norm = function(orig){
+  let sum = orig.reduce( (acc, cur) => acc+cur );
+  return exports.dot(orig, 1/sum);
+}