This is an advanced version of getColLowBndGLPK.
Here, j can be an integer vector.
getColsLowBndsGLPK(lp, j)An object of class "'>glpkPtr" as returned by
initProbGLPK. This is basically a pointer to a GLPK problem
object.
Vector of column numbers.
The lower bounds of all specified columns (j) (the
corresponding structural variables) are returned.
Interface to the C function getColsLowBnds which calls the GLPK
function glp_get_col_lb.
Based on the package glpk by Lopaka Lee.
The GNU GLPK home page at http://www.gnu.org/software/glpk/glpk.html.