pub unsafe extern "C" fn cgemv_(
transa: *const f77_char,
m: *const f77_int,
n: *const f77_int,
alpha: *const scomplex,
a: *const scomplex,
lda: *const f77_int,
x: *const scomplex,
incx: *const f77_int,
beta: *const scomplex,
y: *mut scomplex,
incy: *const f77_int,
)