1 files changed, 171 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/sunspider/check-access-nbody.js b/js/src/jit-test/tests/sunspider/check-access-nbody.js
new file mode 100644
index 000000000..5bcfd59a4
--- /dev/null
+++ b/js/src/jit-test/tests/sunspider/check-access-nbody.js
@@ -0,0 +1,171 @@
+/* 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();
+    })();
+}
+
+assertEq(ret, -0.16906933525822856)