mdw@git.distorted.org.uk Git - adns/blob - src/tvarith.h

   1 /*
   2  * tvarith.h
   3  * - static inline functions for doing arithmetic on timevals
   4  */
   5 /*
   6  *  This file is
   7  *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
   8  *
   9  *  It is part of adns, which is
  10  *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
  11  *    Copyright (C) 1999 Tony Finch <dot@dotat.at>
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2, or (at your option)
  16  *  any later version.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License
  24  *  along with this program; if not, write to the Free Software Foundation,
  25  *  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26  */
  27
  28 #ifndef ADNS_TVARITH_H_INCLUDED
  29 #define ADNS_TVARITH_H_INCLUDED
  30
  31 static inline void timevaladd(struct timeval *tv_io, long ms) {
  32   struct timeval tmp;
  33   assert(ms>=0);
  34   tmp= *tv_io;
  35   tmp.tv_usec += (ms%1000)*1000000;
  36   tmp.tv_sec += ms/1000;
  37   if (tmp.tv_usec >= 1000000) { tmp.tv_sec++; tmp.tv_usec -= 1000; }
  38   *tv_io= tmp;
  39 }
  40
  41 #endif