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 var ints = new Int8Array(16);

 ints[0] = 42;

 function intElementAt(index) {

     return ints[index];

 }

 assertEq(intElementAt(16), undefined);

 assertEq(intElementAt(0), 42);

 var floats = new Float64Array(16);

 floats[0] = 3.14;

 function floatElementAt(index) {

     return floats[index];

 }

 assertEq(floatElementAt(16), undefined);

 assertEq(floatElementAt(0), 3.14);

 var uints = new Uint32Array(16);

 uints[0] = 123;

 function uintElementAt(index) {

     return uints[index];

 }

 assertEq(uintElementAt(16), undefined);

 assertEq(uintElementAt(0), 123);