with some changes and finishing of the package by me.
GLPK is a set of routines written in ANSI C and organized in the form
of a callable library. This package is intended for solving large-scale
linear programming (LP), mixed integer linear programming (MIP), and
other related problems.
GLPK includes the following main components:
* implementation of the primal/dual simplex method;
* implementation of the primal-dual interior point method;
* implementation of the branch-and-bound procedure (based on the dual
simplex method);
* application program interface (API);
* GLPK/L, a modeling language intended for writing LP/MIP models;
* GLPSOL, a stand-alone program intended for solving LP/MIP problems
either prepared in the MPS format or written in the GLPK/L modeling
language.