libcxx/test/std/utilities/memory/specialized.algorithms/buffer.h

   1 // -*- C++ -*-
   2 //===----------------------------------------------------------------------===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_BUFFER_H
  11 #define LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_BUFFER_H
  12
  13 template <typename T, int N>
  14 struct Buffer {
  15   alignas(T) char buffer[sizeof(T) * N] = {};
  16
  17   T* begin() { return reinterpret_cast<T*>(buffer); }
  18   T* end() { return begin() + N; }
  19   const T* cbegin() const { return reinterpret_cast<const T*>(buffer); }
  20   const T* cend() const { return cbegin() + N; }
  21
  22   constexpr int size() const { return N; }
  23 };
  24
  25 #endif // LIBCPP_TEST_STD_UTILITIES_MEMORY_SPECIALIZED_ALGORITHMS_BUFFER_H