stdio-common/snprintf.c

   1 /* Copyright (C) 1991-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <stdarg.h>
  19 #include <stdio.h>
  20 #include <libioP.h>
  21 #define __vsnprintf(s, l, f, a) _IO_vsnprintf (s, l, f, a)
  22
  23 /* Write formatted output into S, according to the format
  24    string FORMAT, writing no more than MAXLEN characters.  */
  25 /* VARARGS3 */
  26 int
  27 __snprintf (char *s, size_t maxlen, const char *format, ...)
  28 {
  29   va_list arg;
  30   int done;
  31
  32   va_start (arg, format);
  33   done = __vsnprintf (s, maxlen, format, arg);
  34   va_end (arg);
  35
  36   return done;
  37 }
  38 libc_hidden_def (__snprintf)
  39 ldbl_weak_alias (__snprintf, snprintf)