#[unsafe(no_mangle)]pub extern "C" fn dgemm_(
_transa: *const u8,
_transb: *const u8,
_m: *const c_int,
_n: *const c_int,
_k: *const c_int,
_alpha: *const f64,
_a: *const f64,
_lda: *const c_int,
_b: *const f64,
_ldb: *const c_int,
_beta: *const f64,
_c: *mut f64,
_ldc: *const c_int,
)