pub unsafe extern "C" fn CPXgetpwl(
env: CPXCENVptr,
lp: CPXCLPptr,
pwlindex: c_int,
vary_p: *mut c_int,
varx_p: *mut c_int,
preslope_p: *mut f64,
postslope_p: *mut f64,
nbreaks_p: *mut c_int,
breakx: *mut f64,
breaky: *mut f64,
breakspace: c_int,
surplus_p: *mut c_int,
) -> c_int