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 // Bug 977853 -- Pared down version of script exhibiting negative

 // interaction with convert to doubles optimization. See bug for gory

 // details.

 if (!getBuildConfiguration().parallelJS)

   quit();

 load(libdir + "parallelarray-helpers.js")

 var numIters = 5;

 var golden_output;

 function PJS_div4(v, s)

 {

   return [ v[0]/s, v[1]/s, v[2]/s, v[3]/s ];

 }

 function PJS_normalized(v)

 {

   var d = Math.sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);

   d = d > 0.0 ? d : 1.0;

   var result = [ v[0]/d, v[1]/d, v[2]/d, 1.0 ];

   return result;

 }

 // This is the elemental function passed to mapPar

 function PJS_displace(p)

 {

   var position = [p[0], p[1], p[2], 1.0];

   var normal = position;

   var roughness = 0.025 / 0.35;

   normal = PJS_normalized(PJS_div4(normal, roughness));

   return null;

 }

 var NUM_VERTEX_COMPONENTS = 3;

 var initPos, nVertices;

 var userData = {

   nVertices : 25, //2880,

   initPos : [],

 };

 function setup() {

   for(var k = 0; k < NUM_VERTEX_COMPONENTS*userData.nVertices; k++) {

     userData.initPos[k] = k/1000;

   }

   nVertices	= userData.nVertices;

   initPos		= new Array(nVertices);

   for(var i=0, j=0; i<nVertices; i++, j+=NUM_VERTEX_COMPONENTS) {

 	initPos[i] = [userData.initPos[j],

 				  userData.initPos[j+1],

 				  userData.initPos[j+2]];

   }

 }

 function SimulatePJS() {

   var curPosAndNor;

   // Measure Parallel Execution

   assertParallelExecSucceeds(

     function(m) { return initPos.mapPar(PJS_displace, m); },

     function() { });

 }

 var start_time, elapsed_parallel = 0, elapsed_sequential = 0;

 setup();

 SimulatePJS();