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