Fixing issue 11

Author: lemire

FastIntegerCompression.js

@@ -107,11 +107,11 @@ FastIntegerCompression.compress = function(input) {
 // From a compressed array of integers stored ArrayBuffer,
 // compute the number of compressed integers by scanning the input.
 FastIntegerCompression.computeHowManyIntegers = function(input) {
-  var view   = new Int8Array(input);
+  var view   = new Uint8Array(input);
   var c = view.length;
   var count = 0;
   for(var i = 0; i < c; i++) {
-    count += (input[i]>>>7);
+    count += (view[i]>>>7);
   }
   return c - count;
 }

package-lock.json

@@ -17,7 +17,7 @@ describe('FastIntegerCompression', function() {
   it('Testing simple compression', function() {
     var array = [10,100000,65999,10,10,0,1,1,2000,0xFFFFFFFF];
     var buf = FastIntegerCompression.compress(array);
-    if(! FastIntegerCompression.computeHowManyIntegers(buf) == array.length) throw "bad count";
+    if(FastIntegerCompression.computeHowManyIntegers(buf) !== array.length) throw "bad count";
     var back = FastIntegerCompression.uncompress(buf);
     if(!arraysEquals(array,back)) throw "bad";
 
@@ -28,7 +28,7 @@ describe('FastIntegerCompression', function() {
   it('Testing simple compression (signed)', function() {
     var array = [10,100000,65999,10,10,0,-1,-1,-2000];
     var buf = FastIntegerCompression.compressSigned(array);
-    if(! FastIntegerCompression.computeHowManyIntegers(buf) == array.length) throw "bad count";
+    if(FastIntegerCompression.computeHowManyIntegers(buf) !== array.length) throw "bad count";
     var back = FastIntegerCompression.uncompressSigned(buf);
     if(!arraysEquals(array,back)) throw "bad";