pub type sgemv_ft = Option<unsafe extern "C" fn(transa: trans_t, conjx: conj_t, m: dim_t, n: dim_t, alpha: *const f32, a: *const f32, rs_a: inc_t, cs_a: inc_t, x: *const f32, incx: inc_t, beta: *const f32, y: *mut f32, incy: inc_t)>;
