1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/build/pgo/js-input/math-spectral-norm.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,101 @@
1.4 +<!DOCTYPE html>
1.5 +<head>
1.6 +<!--
1.7 + Copyright (C) 2007 Apple Inc. All rights reserved.
1.8 +
1.9 + Redistribution and use in source and binary forms, with or without
1.10 + modification, are permitted provided that the following conditions
1.11 + are met:
1.12 + 1. Redistributions of source code must retain the above copyright
1.13 + notice, this list of conditions and the following disclaimer.
1.14 + 2. Redistributions in binary form must reproduce the above copyright
1.15 + notice, this list of conditions and the following disclaimer in the
1.16 + documentation and/or other materials provided with the distribution.
1.17 +
1.18 + THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
1.19 + EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.20 + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.21 + PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
1.22 + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.23 + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.24 + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.25 + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
1.26 + OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
1.27 + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
1.28 + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.29 +-->
1.30 +
1.31 +<title>SunSpider math-spectral-norm</title>
1.32 +
1.33 +</head>
1.34 +
1.35 +<body>
1.36 +<h3>math-spectral-norm</h3>
1.37 +<div id="console">
1.38 +</div>
1.39 +
1.40 +<script>
1.41 +
1.42 +var _sunSpiderStartDate = new Date();
1.43 +
1.44 +// The Great Computer Language Shootout
1.45 +// http://shootout.alioth.debian.org/
1.46 +//
1.47 +// contributed by Ian Osgood
1.48 +
1.49 +function A(i,j) {
1.50 + return 1/((i+j)*(i+j+1)/2+i+1);
1.51 +}
1.52 +
1.53 +function Au(u,v) {
1.54 + for (var i=0; i<u.length; ++i) {
1.55 + var t = 0;
1.56 + for (var j=0; j<u.length; ++j)
1.57 + t += A(i,j) * u[j];
1.58 + v[i] = t;
1.59 + }
1.60 +}
1.61 +
1.62 +function Atu(u,v) {
1.63 + for (var i=0; i<u.length; ++i) {
1.64 + var t = 0;
1.65 + for (var j=0; j<u.length; ++j)
1.66 + t += A(j,i) * u[j];
1.67 + v[i] = t;
1.68 + }
1.69 +}
1.70 +
1.71 +function AtAu(u,v,w) {
1.72 + Au(u,w);
1.73 + Atu(w,v);
1.74 +}
1.75 +
1.76 +function spectralnorm(n) {
1.77 + var i, u=[], v=[], w=[], vv=0, vBv=0;
1.78 + for (i=0; i<n; ++i) {
1.79 + u[i] = 1; v[i] = w[i] = 0;
1.80 + }
1.81 + for (i=0; i<10; ++i) {
1.82 + AtAu(u,v,w);
1.83 + AtAu(v,u,w);
1.84 + }
1.85 + for (i=0; i<n; ++i) {
1.86 + vBv += u[i]*v[i];
1.87 + vv += v[i]*v[i];
1.88 + }
1.89 + return Math.sqrt(vBv/vv);
1.90 +}
1.91 +
1.92 +for (var i = 6; i <= 48; i *= 2) {
1.93 + spectralnorm(i);
1.94 +}
1.95 +
1.96 +
1.97 +var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
1.98 +
1.99 +document.getElementById("console").innerHTML = _sunSpiderInterval;
1.100 +</script>
1.101 +
1.102 +
1.103 +</body>
1.104 +</html>
