pub unsafe extern "C" fn ztgsna_(
__job: *mut c_char,
__howmny: *mut c_char,
__select: *mut __CLPK_logical,
__n: *mut __CLPK_integer,
__a: *mut __CLPK_doublecomplex,
__lda: *mut __CLPK_integer,
__b: *mut __CLPK_doublecomplex,
__ldb: *mut __CLPK_integer,
__vl: *mut __CLPK_doublecomplex,
__ldvl: *mut __CLPK_integer,
__vr: *mut __CLPK_doublecomplex,
__ldvr: *mut __CLPK_integer,
__s: *mut __CLPK_doublereal,
__dif: *mut __CLPK_doublereal,
__mm: *mut __CLPK_integer,
__m: *mut __CLPK_integer,
__work: *mut __CLPK_doublecomplex,
__lwork: *mut __CLPK_integer,
__iwork: *mut __CLPK_integer,
__info: *mut __CLPK_integer
) -> c_int