  We present a MATLAB function for the numerical evaluation of the Faddeyeva
function w(z). The function is based on a newly developed accurate algorithm.
In addition to its higher accuracy, the software provides a flexible accuracy
vs efficiency trade-off through a controlling parameter that may be used to
reduce accuracy and computational time and vice versa. Verification of the
flexibility, reliability and superior accuracy of the algorithm is provided
through comparison with standard algorithms available in other libraries and
software packages.
