diff options
Diffstat (limited to 'pw_minimal_cpp_stdlib/public/pw_minimal_cpp_stdlib/internal/memory.h')
-rw-r--r-- | pw_minimal_cpp_stdlib/public/pw_minimal_cpp_stdlib/internal/memory.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/pw_minimal_cpp_stdlib/public/pw_minimal_cpp_stdlib/internal/memory.h b/pw_minimal_cpp_stdlib/public/pw_minimal_cpp_stdlib/internal/memory.h new file mode 100644 index 000000000..500db85e9 --- /dev/null +++ b/pw_minimal_cpp_stdlib/public/pw_minimal_cpp_stdlib/internal/memory.h @@ -0,0 +1,39 @@ +// Copyright 2023 The Pigweed Authors +// +// Licensed under the Apache License, Version 2.0 (the "License"); you may not +// use this file except in compliance with the License. You may obtain a copy of +// the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +// License for the specific language governing permissions and limitations under +// the License. +#pragma once + +#include "pw_polyfill/standard_library/namespace.h" + +_PW_POLYFILL_BEGIN_NAMESPACE_STD + +template <typename T> +T* addressof(T& arg) noexcept { + return reinterpret_cast<T*>( + const_cast<char*>(reinterpret_cast<const volatile char*>(&arg))); +} + +template <typename T> +T* addressof(T&& arg) = delete; + +template <typename T> +struct pointer_traits; + +template <typename T> +struct pointer_traits<T*> { + using pointer = T*; + using element_type = T; + using difference_type = decltype((const char*)1 - (const char*)1); +}; + +_PW_POLYFILL_END_NAMESPACE_STD |