pub unsafe extern "C" fn CPXaddcols(
env: CPXCENVptr,
lp: CPXLPptr,
ccnt: c_int,
nzcnt: c_int,
obj: *const f64,
cmatbeg: *const c_int,
cmatind: *const c_int,
cmatval: *const f64,
lb: *const f64,
ub: *const f64,
colname: *mut *mut c_char,
) -> c_int