getColLowBndGLPK.
Here, j can be an integer vector.getColsLowBndsGLPK(lp, j)"glpkPtr " as returned by
initProbGLPK. This is basically a pointer to a GLPK problem
object.j) (the
corresponding structural variables) are returned.getColsLowBnds which calls the GLPK
function glp_get_col_lb.