00001 /* Copyright (C) 1991-1994,96,97,98,99,2000,01,02 00002 Free Software Foundation, Inc. 00003 This file is part of the GNU C Library. 00004 00005 The GNU C Library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Lesser General Public 00007 License as published by the Free Software Foundation; either 00008 version 2.1 of the License, or (at your option) any later version. 00009 00010 The GNU C Library is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Lesser General Public License for more details. 00014 00015 You should have received a copy of the GNU Lesser General Public 00016 License along with the GNU C Library; if not, write to the Free 00017 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 00018 02111-1307 USA. */ 00019 00020 /* never worry about timersub type activies again -- from GLIBC and upcased. */ 00021 #define TIMERSUB(a, b, result) \ 00022 do { \ 00023 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ 00024 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ 00025 if ((result)->tv_usec < 0) { \ 00026 --(result)->tv_sec; \ 00027 (result)->tv_usec += 1000000; \ 00028 } \ 00029 } while (0) 00030
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