cuda-core 0.3.1

Idiomatic CUDA API.
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// SPDX-FileCopyrightText: Copyright (c) 2024-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: Apache-2.0

use std::marker::PhantomData;
use std::mem::MaybeUninit;
use std::num::Wrapping;

use cuda_core::DeviceCopy;

fn assert_device_copy<T: DeviceCopy>() {}

#[test]
fn device_copy_covers_core_parity_types() {
    // `bool` and `char` are intentionally NOT `DeviceCopy`: they have validity
    // holes (only 0/1 for `bool`, only valid Unicode scalars for `char`), so a
    // device-written byte outside that set would be UB on readback. Only the
    // representation-preserving wrappers below are sound parity additions.
    assert_device_copy::<PhantomData<String>>();
    assert_device_copy::<MaybeUninit<u32>>();
    assert_device_copy::<Wrapping<u64>>();
}