The DataFetch library of functions for the retrieval and interpretation of thermophysical data from the TRC SOURCE database

The DataFetch library is a collection of functions which may be compiled and linked to user-written application programs. They extract information from a local version of the TRC SOURCE Database. The database is an extensive archive of experimental values of thermodynamic, thermochemical, and transport properties of pure compounds, chemical reactions, and binary and ternary mixtures. Application programs may call the library functions with parameters which specify the kind of data to be retrieved. The results are returned in a series of memory-resident buffers. The library functions operate at a series of processing levels. The lowest level returns the direct experimental values, along with associated information which identifies the components, properties, phases, literature references, sample descriptions, estimated uncertainties, etc. Higher levels return groups of related properties, normalized values of properties, selections of the most accurate values, and fits to smoothing functions. The library functions are written in C++ and interact with a local version of the SOURCE database. They are compatible with any platform which supports a C++ compiler in either a stand-alone or a client-server mode.