pub unsafe extern fn dsygvx_(itype: *const lapack_int, jobz: *const c_char, range: *const c_char, uplo: *const c_char, n: *const lapack_int, a: *mut c_double, lda: *const lapack_int, b: *mut c_double, ldb: *const lapack_int, vl: *const c_double, vu: *const c_double, il: *const lapack_int, iu: *const lapack_int, abstol: *const c_double, m: *mut lapack_int, w: *mut c_double, z: *mut c_double, ldz: *const lapack_int, work: *mut c_double, lwork: *const lapack_int, iwork: *mut lapack_int, ifail: *mut lapack_int, info: *mut lapack_int)