[Pkg-javascript-commits] [node-sha.js] 95/237: Int32 is a little faster than Uint32

[Bastien Roucariès]

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rouca pushed a commit to branch master
in repository node-sha.js.

commit c61542e06a4c06245aca3860aa36d97e250f08b9
Author: Dominic Tarr <dominic.tarr at gmail.com>
Date:   Sun Jan 12 00:07:48 2014 +0700

    Int32 is a little faster than Uint32
---
 sha1.js | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/sha1.js b/sha1.js
index 984f741..b09ee91 100644
--- a/sha1.js
+++ b/sha1.js
@@ -25,7 +25,7 @@ var LE = true
 function Sha1 () {
   if(!(this instanceof Sha1)) return new Sha1()
 
-  this._w = new Uint32Array(80)
+  this._w = new Int32Array(80)
   Hash.call(this, 16*4, 14*4)
   
   this._h = new Uint8Array(20)
@@ -64,7 +64,7 @@ Sha1.prototype._update = function (array) {
   for(var j = 0; j < 80; j++) {
     var W = w[j]
       = j < 16
-      ? X.getUint32(j*4, BE)
+      ? X.getInt32(j*4, BE)
       : rol(w[j - 3] ^ w[j -  8] ^ w[j - 14] ^ w[j - 16], 1)
 
     var t =
@@ -89,11 +89,11 @@ Sha1.prototype._update = function (array) {
 
 Sha1.prototype._hash = function () {
   var H = this._dvH //new DataView(new ArrayBuffer(20))
-  H.setUint32(A, this._a, BE)
-  H.setUint32(B, this._b, BE)
-  H.setUint32(C, this._c, BE)
-  H.setUint32(D, this._d, BE)
-  H.setUint32(E, this._e, BE)
+  H.setInt32(A, this._a, BE)
+  H.setInt32(B, this._b, BE)
+  H.setInt32(C, this._c, BE)
+  H.setInt32(D, this._d, BE)
+  H.setInt32(E, this._e, BE)
   return H
 }
 

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