pub unsafe extern "C" fn cudaMemcpyAsync(
dst: *mut c_void,
src: *const c_void,
count: usize,
kind: cudaMemcpyKind,
stream: cudaStream_t,
) -> cudaError_tpub unsafe extern "C" fn cudaMemcpyAsync(
dst: *mut c_void,
src: *const c_void,
count: usize,
kind: cudaMemcpyKind,
stream: cudaStream_t,
) -> cudaError_t