pub unsafe extern fn dtgsen_(ijob: *const c_int, wantq: *const c_int, wantz: *const c_int, select: *const c_int, n: *const c_int, a: *mut c_double, lda: *const c_int, b: *mut c_double, ldb: *const c_int, alphar: *mut c_double, alphai: *mut c_double, beta: *mut c_double, q: *mut c_double, ldq: *const c_int, z: *mut c_double, ldz: *const c_int, m: *mut c_int, pl: *mut c_double, pr: *mut c_double, dif: *mut c_double, work: *mut c_double, lwork: *const c_int, iwork: *mut c_int, liwork: *const c_int, info: *mut c_int)