libcxx/test/std/experimental/simd/simd.reference/reference_unary.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11, c++14

// <experimental/simd>
//
// [simd.reference]
// reference operator++() && noexcept;
// value_type operator++(int) && noexcept;
// reference operator--() && noexcept;
// value_type operator--(int) && noexcept;

#include "../test_utils.h"
#include <experimental/simd>

namespace ex = std::experimental::parallelism_v2;

template <class T, std::size_t>
struct CheckSimdReferenceUnaryOperators {
  template <class SimdAbi>
  void operator()() const {
    ex::simd<T, SimdAbi> origin_simd(static_cast<T>(3));
    static_assert(noexcept(++origin_simd[0]));
    assert(((T)(++origin_simd[0]) == static_cast<T>(4)) && ((T)origin_simd[0] == static_cast<T>(4)));
    static_assert(noexcept(origin_simd[0]++));
    assert(((T)(origin_simd[0]++) == static_cast<T>(4)) && ((T)origin_simd[0] == static_cast<T>(5)));
    static_assert(noexcept(--origin_simd[0]));
    assert(((T)(--origin_simd[0]) == static_cast<T>(4)) && ((T)origin_simd[0] == static_cast<T>(4)));
    static_assert(noexcept(origin_simd[0]--));
    assert(((T)(origin_simd[0]--) == static_cast<T>(4)) && ((T)origin_simd[0] == static_cast<T>(3)));
  }
};

int main(int, char**) {
  test_all_simd_abi<CheckSimdReferenceUnaryOperators>();
  return 0;
}