The R-matrix method, introduced by Wigner and Eisenbud, has been applied
to a broad range of electron transport problems in nanoscale quantum
devices. With the rapid increase in the development and modelling of
nanodevices, efficient, accurate, and general computation of
Wigner-Eisenbud functions is required. The Wolfram Language package
WignerEisenbud.m, which uses the Fourier discrete cosine transform to
compute the Wigner-Eisenbud functions in dimensionless units for an
arbitrary potential in one dimension, and two dimensions in cylindrical
coordinates.