hello everyone, I have some questions about GLPK through the API. I have a variable like this : 2<=x<=5 ,through API, I write it like this:
glp_add_cols(lp,1); glp_set_col_name(lp,1,"x"); glp_set_col_bnds(lp,1,GLP_LO,2.0,0.0); glp_set_col_bnds(lp,1,GLP_UP,0.0,5.0); or like this: glp_add_cols(lp,2); glp_set_col_name(lp,1,"x"); glp_set_col_name(lp,2,"x"); glp_set_col_bnds(lp,1,GLP_LO,2.0,0.0); glp_set_col_bnds(lp,2,GLP_UP,0.0,5.0); which is right? i do not know add 1 cols or add 2 cols . thanks very much! -- LEO
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