pub unsafe extern "C" fn zgbmv_(
trans: *const c_char,
m: *mut c_int,
n: *mut c_int,
kl: *mut c_int,
ku: *mut c_int,
alpha: *mut Rcomplex,
a: *mut Rcomplex,
lda: *mut c_int,
x: *mut Rcomplex,
incx: *mut c_int,
Rf_beta: *mut Rcomplex,
y: *mut Rcomplex,
incy: *mut c_int,
arg1: usize
)