lib/printf.c

   1 /* Formatted output to a stream.
   2    Copyright (C) 2007, 2010-2018 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   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, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include <config.h>
  19 #endif
  20
  21 /* Specification.  */
  22 #include <stdio.h>
  23
  24 #include <stdarg.h>
  25
  26 /* Print formatted output to standard output.
  27    Return string length of formatted string.  On error, return a negative
  28    value.  */
  29 int
  30 printf (const char *format, ...)
  31 {
  32   int retval;
  33   va_list args;
  34
  35   va_start (args, format);
  36   retval = vfprintf (stdout, format, args);
  37   va_end (args);
  38
  39   return retval;
  40 }