Low level interface function to the GLPK function glp_del_cols.
Consult the GLPK documentation for more detailed information.
delColsGLPK(lp, ncols, j)An object of class "'>glpkPtr" as returned by
initProbGLPK. This is basically a pointer to a GLPK problem
object.
Number of columns to delete.
Ordinal numbers of columns to delete.
NULL
Interface to the C function delCols which calls the GLPK
function glp_del_cols.
Based on the package glpk by Lopaka Lee.
The GNU GLPK home page at http://www.gnu.org/software/glpk/glpk.html.