ceph/src/common/align.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5   *
   6  * Copyright (C) 2015 XSky <haomai@xsky.com>
   7  *
   8  * Author: Haomai Wang <haomaiwang@gmail.com>
   9  *
  10  * This is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License version 2.1, as published by the Free Software
  13  * Foundation.  See file COPYING.
  14  *
  15  */
  16
  17 #ifndef CEPH_COMMON_ALIGN_H
  18 #define CEPH_COMMON_ALIGN_H
  19
  20 template <typename T>
  21 inline constexpr T align_up(T v, T align) {
  22   return (v + align - 1) & ~(align - 1);
  23 }
  24
  25 template <typename T>
  26 inline constexpr T align_down(T v, T align) {
  27   return v & ~(align - 1);
  28 }
  29
  30 #endif /* CEPH_COMMON_ALIGN_H */