uCalc Fast Math Parser 2.95 is now available. With the help of a LabVIEW user, better support for LabVIEW was implemented in this version, in the form of a wrapper dll (uCalcWrp.dll).
uCalc Fast Math Parser lets you evaluate math expressions defined at runtime. I am not a LabVIEW user myself, but I'm told that LabVIEW has a parser, but uCalc has the advantage of being faster, and more flexible.