pub unsafe extern fn ztgsna_(job: *const c_char,
howmny: *const c_char,
select: *const lapack_logical,
n: *const lapack_int,
a: *const lapack_complex_double,
lda: *const lapack_int,
b: *const lapack_complex_double,
ldb: *const lapack_int,
vl: *const lapack_complex_double,
ldvl: *const lapack_int,
vr: *const lapack_complex_double,
ldvr: *const lapack_int,
s: *mut c_double,
dif: *mut c_double,
mm: *const lapack_int,
m: *mut lapack_int,
work: *mut lapack_complex_double,
lwork: *const lapack_int,
iwork: *mut lapack_int,
info: *mut lapack_int)