products/Sources/formale Sprachen/C/Firefox/build/pgo/js-input/sunspider/math-spectral-norm.html
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<
title >SunSpider math-spectral-norm</
title >
</
head >
<
body >
<h3>math-spectral-norm</h3>
<
div id=
"console" >
</
div >
<
script >
var _sunSpiderStartDate = new Date();
// The Great Computer Language Shootout
//
http://shootout.alioth.debian.org/
//
// contributed by Ian Osgood
function
A (
i ,j) {
return
1 /((
i +j)*(
i +j+
1 )/
2 +
i +
1 );
}
function Au(
u ,v) {
for (
var i =
0 ;
i <
u .length; ++
i ) {
var t =
0 ;
for (
var j=
0 ; j<
u .length; ++j)
t +=
A (
i ,j) *
u [j];
v[
i ] = t;
}
}
function Atu(
u ,v) {
for (
var i =
0 ;
i <
u .length; ++
i ) {
var t =
0 ;
for (
var j=
0 ; j<
u .length; ++j)
t +=
A (j,
i ) *
u [j];
v[
i ] = t;
}
}
function AtAu(
u ,v,w) {
Au(
u ,w);
Atu(w,v);
}
function spectralnorm(n) {
var i ,
u =[], v=[], w=[], vv=
0 , vBv=
0 ;
for (
i =
0 ;
i <n; ++
i ) {
u [
i ] =
1 ; v[
i ] = w[
i ] =
0 ;
}
for (
i =
0 ;
i <
10 ; ++
i ) {
AtAu(
u ,v,w);
AtAu(v,
u ,w);
}
for (
i =
0 ;
i <n; ++
i ) {
vBv +=
u [
i ]*v[
i ];
vv += v[
i ]*v[
i ];
}
return Math.sqrt(vBv/vv);
}
for (
var i =
6 ;
i <=
48 ;
i *=
2 ) {
spectralnorm(
i );
}
var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
document.getElementById(
"console" ).innerHTML = _sunSpiderInterval;
</
script >
</
body >
</
html >
Messung V0.5 in Prozent C=96 H=97 G=96
¤ Dauer der Verarbeitung: 0.4 Sekunden
¤ *© Formatika GbR, Deutschland
