pub unsafe extern fn dsbgv_(jobz: *const c_char,
uplo: *const c_char,
n: *const lapack_int,
ka: *const lapack_int,
kb: *const lapack_int,
ab: *mut c_double,
ldab: *const lapack_int,
bb: *mut c_double,
ldbb: *const lapack_int,
w: *mut c_double,
z: *mut c_double,
ldz: *const lapack_int,
work: *mut c_double,
info: *mut lapack_int)