pub unsafe extern "C" fn CPXcallbackmakebranch(
context: CPXCALLBACKCONTEXTptr,
varcnt: c_int,
varind: *const c_int,
varlu: *const c_char,
varbd: *const f64,
rcnt: c_int,
nzcnt: c_int,
rhs: *const f64,
sense: *const c_char,
rmatbeg: *const c_int,
rmatind: *const c_int,
rmatval: *const f64,
nodeest: f64,
seqnum_p: *mut c_int,
) -> c_int