gecko/build/pgo/js-input/access-nbody.html
Robert Sayre b32137338d bug 472706 - add better profiling input for spidermonkey in PGO builds. r=ted
--HG--
rename : modules/libpr0n/test/unit/image3.ico => build/pgo/favicon.ico
2009-01-13 07:34:19 -05:00

220 lines
5.7 KiB
HTML

<!DOCTYPE html>
<head>
<!--
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modification, are permitted provided that the following conditions
are met:
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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<title>SunSpider access-nbody</title>
</head>
<body>
<h3>access-nbody</h3>
<div id="console">
</div>
<script>
var _sunSpiderStartDate = new Date();
/* The Great Computer Language Shootout
http://shootout.alioth.debian.org/
contributed by Isaac Gouy */
var PI = 3.141592653589793;
var SOLAR_MASS = 4 * PI * PI;
var DAYS_PER_YEAR = 365.24;
function Body(x,y,z,vx,vy,vz,mass){
this.x = x;
this.y = y;
this.z = z;
this.vx = vx;
this.vy = vy;
this.vz = vz;
this.mass = mass;
}
Body.prototype.offsetMomentum = function(px,py,pz) {
this.vx = -px / SOLAR_MASS;
this.vy = -py / SOLAR_MASS;
this.vz = -pz / SOLAR_MASS;
return this;
}
function Jupiter(){
return new Body(
4.84143144246472090e+00,
-1.16032004402742839e+00,
-1.03622044471123109e-01,
1.66007664274403694e-03 * DAYS_PER_YEAR,
7.69901118419740425e-03 * DAYS_PER_YEAR,
-6.90460016972063023e-05 * DAYS_PER_YEAR,
9.54791938424326609e-04 * SOLAR_MASS
);
}
function Saturn(){
return new Body(
8.34336671824457987e+00,
4.12479856412430479e+00,
-4.03523417114321381e-01,
-2.76742510726862411e-03 * DAYS_PER_YEAR,
4.99852801234917238e-03 * DAYS_PER_YEAR,
2.30417297573763929e-05 * DAYS_PER_YEAR,
2.85885980666130812e-04 * SOLAR_MASS
);
}
function Uranus(){
return new Body(
1.28943695621391310e+01,
-1.51111514016986312e+01,
-2.23307578892655734e-01,
2.96460137564761618e-03 * DAYS_PER_YEAR,
2.37847173959480950e-03 * DAYS_PER_YEAR,
-2.96589568540237556e-05 * DAYS_PER_YEAR,
4.36624404335156298e-05 * SOLAR_MASS
);
}
function Neptune(){
return new Body(
1.53796971148509165e+01,
-2.59193146099879641e+01,
1.79258772950371181e-01,
2.68067772490389322e-03 * DAYS_PER_YEAR,
1.62824170038242295e-03 * DAYS_PER_YEAR,
-9.51592254519715870e-05 * DAYS_PER_YEAR,
5.15138902046611451e-05 * SOLAR_MASS
);
}
function Sun(){
return new Body(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, SOLAR_MASS);
}
function NBodySystem(bodies){
this.bodies = bodies;
var px = 0.0;
var py = 0.0;
var pz = 0.0;
var size = this.bodies.length;
for (var i=0; i<size; i++){
var b = this.bodies[i];
var m = b.mass;
px += b.vx * m;
py += b.vy * m;
pz += b.vz * m;
}
this.bodies[0].offsetMomentum(px,py,pz);
}
NBodySystem.prototype.advance = function(dt){
var dx, dy, dz, distance, mag;
var size = this.bodies.length;
for (var i=0; i<size; i++) {
var bodyi = this.bodies[i];
for (var j=i+1; j<size; j++) {
var bodyj = this.bodies[j];
dx = bodyi.x - bodyj.x;
dy = bodyi.y - bodyj.y;
dz = bodyi.z - bodyj.z;
distance = Math.sqrt(dx*dx + dy*dy + dz*dz);
mag = dt / (distance * distance * distance);
bodyi.vx -= dx * bodyj.mass * mag;
bodyi.vy -= dy * bodyj.mass * mag;
bodyi.vz -= dz * bodyj.mass * mag;
bodyj.vx += dx * bodyi.mass * mag;
bodyj.vy += dy * bodyi.mass * mag;
bodyj.vz += dz * bodyi.mass * mag;
}
}
for (var i=0; i<size; i++) {
var body = this.bodies[i];
body.x += dt * body.vx;
body.y += dt * body.vy;
body.z += dt * body.vz;
}
}
NBodySystem.prototype.energy = function(){
var dx, dy, dz, distance;
var e = 0.0;
var size = this.bodies.length;
for (var i=0; i<size; i++) {
var bodyi = this.bodies[i];
e += 0.5 * bodyi.mass *
( bodyi.vx * bodyi.vx
+ bodyi.vy * bodyi.vy
+ bodyi.vz * bodyi.vz );
for (var j=i+1; j<size; j++) {
var bodyj = this.bodies[j];
dx = bodyi.x - bodyj.x;
dy = bodyi.y - bodyj.y;
dz = bodyi.z - bodyj.z;
distance = Math.sqrt(dx*dx + dy*dy + dz*dz);
e -= (bodyi.mass * bodyj.mass) / distance;
}
}
return e;
}
var ret;
for ( var n = 3; n <= 24; n *= 2 ) {
(function(){
var bodies = new NBodySystem( Array(
Sun(),Jupiter(),Saturn(),Uranus(),Neptune()
));
var max = n * 100;
ret = bodies.energy();
for (var i=0; i<max; i++){
bodies.advance(0.01);
}
ret = bodies.energy();
})();
}
var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
document.getElementById("console").innerHTML = _sunSpiderInterval;
</script>
</body>
</html>