pub unsafe extern "C" fn dlarrv_(
n: *mut c_int,
d: *mut c_double,
l: *mut c_double,
isplit: *mut c_int,
m: *mut c_int,
w: *mut c_double,
iblock: *mut c_int,
gersch: *mut c_double,
tol: *mut c_double,
z: *mut c_double,
ldz: *mut c_int,
isuppz: *mut c_int,
work: *mut c_double,
iwork: *mut c_int,
info: *mut c_int,
)