bitops-bits-in-byte.html

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<title>SunSpider bitops-bits-in-byte</title>

</head>

<body>

<h3>bitops-bits-in-byte</h3>

<div id="console">

</div>

<script>

var _sunSpiderStartDate = new Date();

// Copyright (c) 2004 by Arthur Langereis (arthur_ext at domain xfinitegames, tld com)

// 1 op = 2 assigns, 16 compare/branches, 8 ANDs, (0-8) ADDs, 8 SHLs

// O(n)

function bitsinbyte(b) {

var m = 1, c = 0;

while(m<0x100) {

if(b & m) c++;

m <<= 1;

return c;

function TimeFunc(func) {

var x, y, t;

for(var x=0; x<350; x++)

for(var y=0; y<256; y++) func(y);

TimeFunc(bitsinbyte);

var _sunSpiderInterval = new Date() - _sunSpiderStartDate;

document.getElementById("console").innerHTML = _sunSpiderInterval;

</script>

</body>

</html>