pub unsafe extern fn LAPACKE_zstein(matrix_layout: c_int,
n: lapack_int,
d: *const c_double,
e: *const c_double,
m: lapack_int,
w: *const c_double,
iblock: *const lapack_int,
isplit: *const lapack_int,
z: *mut lapack_complex_double,
ldz: lapack_int,
ifailv: *mut lapack_int)
-> lapack_int