1 /* Generate time strings directly to the output. */ 2 3 /* Copyright (C) 2005, 2009-2021 Free Software Foundation, Inc. 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; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #include <stdio.h> 19 #include <time.h> 20 21 /* A cross between fprintf and nstrftime, that prints directly 22 to the output stream, without the need for the potentially 23 large buffer that nstrftime would require. 24 25 Output to stream FP the result of formatting (according to the 26 nstrftime format string, FMT) the time data, *TM, and the ZONE 27 and NANOSECONDS values. */ 28 size_t fprintftime (FILE *fp, char const *fmt, struct tm const *tm, 29 timezone_t zone, int nanoseconds);