Index: chrome/test/data/dromaeo/tests/sunspider-access-nbody.html |
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--- chrome/test/data/dromaeo/tests/sunspider-access-nbody.html (revision 0) |
+++ chrome/test/data/dromaeo/tests/sunspider-access-nbody.html (revision 0) |
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+<html> |
+<head> |
+<script src="../htmlrunner.js"></script> |
+<script> |
+/* 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; |
+} |
+ |
+window.onload = function(){ startTest("sunspider-access-nbody", ''); |
+ |
+var ret; |
+ |
+test( "N-Body", function(){ |
+ for ( var n = 3; n <= 6; n *= 2 ) { |
+ 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(); |
+ } |
+}); |
+ |
+endTest(); }; |
+</script> |
+</head> |
+<body></body> |
+</html> |