fmt-tai64n.c (1350B)
1 // $Id$ --*- c -*-- 2 3 // Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de> 4 // 5 // This program is free software; you can redistribute it and/or modify 6 // it under the terms of the GNU General Public License as published by 7 // the Free Software Foundation; version 2 of the License. 8 // 9 // This program is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with this program; if not, write to the Free Software 16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 18 19 #ifdef HAVE_CONFIG_H 20 # include <config.h> 21 #endif 22 23 #include "fmt.h" 24 #include "fmt-internal.h" 25 26 #include <sys/time.h> 27 #include <string.h> 28 #include <assert.h> 29 30 size_t 31 FMT_P(tai64n)(char *buf, struct timeval const *now) 32 { 33 uint64_t tai_secs = 1ll << 62; 34 char * ptr = buf; 35 size_t l; 36 37 tai_secs += now->tv_sec; 38 *ptr++ = '@'; 39 40 l = FMT_P(xuint64)(ptr, tai_secs); // always 16 bytes 41 assert(l==16); 42 ptr += 16; 43 44 memset(ptr, '0', 8); 45 l = FMT_P(xuint32)(0, now->tv_usec*1000); 46 FMT_P(xuint32)(ptr+8-l, now->tv_usec*1000); 47 48 ptr += 8; 49 50 return ptr-buf; 51 }