mirror of
https://github.com/danog/libtgvoip.git
synced 2024-12-12 09:09:38 +01:00
33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Use of this source code is governed by a BSD-style license
|
||
|
|
* that can be found in the LICENSE file in the root of the source
|
||
|
|
* tree. An additional intellectual property rights grant can be found
|
||
|
|
* in the file PATENTS. All contributing project authors may
|
||
|
|
* be found in the AUTHORS file in the root of the source tree.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef RTC_BASE_ARRAYSIZE_H_
|
||
|
|
#define RTC_BASE_ARRAYSIZE_H_
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
|
||
|
|
// This file defines the arraysize() macro and is derived from Chromium's
|
||
|
|
// base/macros.h.
|
||
|
|
|
||
|
|
// The arraysize(arr) macro returns the # of elements in an array arr.
|
||
|
|
// The expression is a compile-time constant, and therefore can be
|
||
|
|
// used in defining new arrays, for example. If you use arraysize on
|
||
|
|
// a pointer by mistake, you will get a compile-time error.
|
||
|
|
|
||
|
|
// This template function declaration is used in defining arraysize.
|
||
|
|
// Note that the function doesn't need an implementation, as we only
|
||
|
|
// use its type.
|
||
|
|
template <typename T, size_t N>
|
||
|
|
char (&ArraySizeHelper(T (&array)[N]))[N];
|
||
|
|
|
||
|
|
#define arraysize(array) (sizeof(ArraySizeHelper(array)))
|
||
|
|
|
||
|
|
#endif // RTC_BASE_ARRAYSIZE_H_
|