pub unsafe extern "C" fn dlacn2_(
n: *const lapack_int,
v: *mut c_double,
x: *mut c_double,
isgn: *mut lapack_int,
est: *mut c_double,
kase: *mut lapack_int,
isave: *mut lapack_int,
)
pub unsafe extern "C" fn dlacn2_(
n: *const lapack_int,
v: *mut c_double,
x: *mut c_double,
isgn: *mut lapack_int,
est: *mut c_double,
kase: *mut lapack_int,
isave: *mut lapack_int,
)