1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2011 New Dream Network
8 * This is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License version 2.1, as published by the Free Software
11 * Foundation. See file COPYING.
15 #ifndef CEPH_COMMON_STATIC_ASSERT
16 #define CEPH_COMMON_STATIC_ASSERT
18 /* Create a compiler error if condition is false.
19 * Also produce a result of value 0 and type size_t.
20 * This expression can be used anywhere, even in structure initializers.
22 #define STATIC_ASSERT(x) (sizeof(int[((x)==0) ? -1 : 0]))