fix sfc32

bryc · Aug 31, 2018 · dcf6d6c · dcf6d6c
1 parent a1fec62
commit dcf6d6c
Showing 1 changed file with 4 additions and 5 deletions.
diff --git a/jshash/PRNG.md b/jshash/PRNG.md
@@ -249,13 +249,12 @@ Yet another chaotic PRNG, the sfc stands for "Small Fast Counter". It passes Pra
 ```js
 function sfc32(a, b, c, d) {
     return function() {
-      a >>>= 0; b >>>= 0; c >>>= 0; d >>>= 0; 
-      var t = (a + b) | 0;
+      a |= 0; b |= 0; c |= 0; d |= 0; 
+      var t = (a + b | 0) + d | 0;
+      d = d + 1 | 0;
       a = b ^ b >>> 9;
       b = c + (c << 3) | 0;
-      c = (c << 21 | c >>> 11);
-      d = d + 1 | 0;
-      t = t + d | 0;
+      c = c << 21 | c >>> 11;
       c = c + t | 0;
       return (t >>> 0) / 4294967296;
     }