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) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk> 11 * Copyright (C) 1999-2000 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)*1000; 36 tmp.tv_sec += ms/1000; 37 if (tmp.tv_usec >= 1000000) { tmp.tv_sec++; tmp.tv_usec -= 1000000; } 38 *tv_io= tmp; 39 } 40 41 #endif 42