1 /* declarations for strftime.c 2 3 Copyright (C) 2002, 2004, 2008-2021 Free Software Foundation, Inc. 4 5 This file is free software: you can redistribute it and/or modify 6 it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 3 of the 8 License, or (at your option) any later version. 9 10 This file 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 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public License 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 17 18 #include <time.h> 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 /* Just like strftime, but with two more arguments: 25 POSIX requires that strftime use the local timezone information. 26 Use the timezone __TZ instead. Use __NS as the number of 27 nanoseconds in the %N directive. 28 29 On error, set errno and return 0. Otherwise, return the number of 30 bytes generated (not counting the trailing NUL), preserving errno 31 if the number is 0. This errno behavior is in draft POSIX 202x 32 plus some requested changes to POSIX. */ 33 size_t nstrftime (char *restrict, size_t, char const *, struct tm const *, 34 timezone_t __tz, int __ns); 35 36 #ifdef __cplusplus 37 } 38 #endif 39