This is the library for wcalc which contains all of the numerical backend routines and models. Wcalc is a tool for the analysis and synthesis of transmission line structures and related components. Wcalc provides the ability to analyze the electrical parameters of a particular structure based on the physical dimensions and material parameters. The synthesis portion calculates the required physical parameters to meet desired electrical specifications. Wcalc includes several models and places an emphasis on accuracy. Several frontends provide the user with several options for its use.