FILTRANE, a Fortran 95 filter-trust-region package for 
                   solving nonlinear feasibility problems

                     Nick Gould and Philippe L. Toint

                              Report 03/17

This paper describes the algorithm and performance of FILTRANE, a new Fortran
95 packages for finding vectors satisfying general sets of nonlinear equations
and/or inequalities. A number of algorithmic variants are discussed and
extensively compared on a set of CUTEr test problems, indicating that the
default variant is both reliable and efficient. This discussion provides a
first experimental study of the parameters inherent to filter algorithms.