There is now a filter called maExtractBits in the UI module.
You can then use it like this -

<div id="e39fea8a-c64a-4ae6-9e3c-d80d4aa0acb0" style="position: absolute; left: 369px; top: 145px;" ng-switch="point.value | maExtractBits:'0x3800':11"> Inverter status: <span ng-switch-when="1">Off</span> <span ng-switch-when="2">On</span> <span ng-switch-when="4">Hold</span> </div>