1/* Implement the snprintf function. 2 Copyright (C) 2003-2020 Free Software Foundation, Inc. 3 Written by Kaveh R. Ghazi <ghazi@caip.rutgers.edu>. 4 5This file is part of the libiberty library. This library is free 6software; you can redistribute it and/or modify it under the 7terms of the GNU General Public License as published by the 8Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11This library is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU CC; see the file COPYING. If not, write to 18the Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. 19 20As a special exception, if you link this library with files 21compiled with a GNU compiler to produce an executable, this does not cause 22the resulting executable to be covered by the GNU General Public License. 23This exception does not however invalidate any other reasons why 24the executable file might be covered by the GNU General Public License. */ 25 26/* 27 28@deftypefn Supplemental int snprintf (char *@var{buf}, size_t @var{n}, @ 29 const char *@var{format}, ...) 30 31This function is similar to @code{sprintf}, but it will write to 32@var{buf} at most @code{@var{n}-1} bytes of text, followed by a 33terminating null byte, for a total of @var{n} bytes. 34On error the return value is -1, otherwise it returns the number of 35bytes, not including the terminating null byte, that would have been 36written had @var{n} been sufficiently large, regardless of the actual 37value of @var{n}. Note some pre-C99 system libraries do not implement 38this correctly so users cannot generally rely on the return value if 39the system version of this function is used. 40 41@end deftypefn 42 43*/ 44 45#include "ansidecl.h" 46 47#include <stdarg.h> 48#include <stddef.h> 49 50int vsnprintf (char *, size_t, const char *, va_list); 51 52int 53snprintf (char *s, size_t n, const char *format, ...) 54{ 55 int result; 56 va_list ap; 57 va_start (ap, format); 58 result = vsnprintf (s, n, format, ap); 59 va_end (ap); 60 return result; 61} 62