function addCustomFunction_sumAB( assert, mode ) {

var gpu = new GPU();

function custom_adder(a,b) {

return a+b;

}

gpu.addFunction(custom_adder);

var f = gpu.createKernel(function(a, b) {

return custom_adder(a[this.thread.x], b[this.thread.x]);

}, {

dimensions : [6],

mode : mode

});

assert.ok( f !== null, "function generated test");

var a = [1, 2, 3, 5, 6, 7];

var b = [4, 5, 6, 1, 2, 3];

var res = f(a,b);

var exp = [5, 7, 9, 6, 8, 10];

for(var i = 0; i < exp.length; ++i) {

QUnit.close(res[i], exp[i], 0.1, "Result arr idx: "+i);

}

}

QUnit.test( "addCustomFunction_sumAB (auto)", function( assert ) {

addCustomFunction_sumAB(assert, null);

});

QUnit.test( "addCustomFunction_sumAB (GPU)", function( assert ) {

addCustomFunction_sumAB(assert, "gpu");

});

QUnit.test( "addCustomFunction_sumAB (CPU)", function( assert ) {

addCustomFunction_sumAB(assert, "cpu");

});