newlib/libc/machine/nvptx/putchar.c

   1 /*
   2  * Support file for nvptx in newlib.
   3  * Copyright (c) 2015-2018 Mentor Graphics.
   4  *
   5  * The authors hereby grant permission to use, copy, modify, distribute,
   6  * and license this software and its documentation for any purpose, provided
   7  * that existing copyright notices are retained in all copies and that this
   8  * notice is included verbatim in any distributions. No written agreement,
   9  * license, or royalty fee is required for any of the authorized uses.
  10  * Modifications to this software may be copyrighted by their authors
  11  * and need not follow the licensing terms described here, provided that
  12  * the new terms are clearly indicated on the first page of each file where
  13  * they apply.
  14  */
  15
  16 #include <stdarg.h>
  17
  18 extern int vprintf (const char *, va_list);
  19
  20 int
  21 putchar (int c)
  22 {
  23   unsigned valist[1];
  24
  25   c = (unsigned char)c;
  26   valist[0] = c;
  27   int ret = vprintf ("%c", valist);
  28   if (ret < 0)
  29     c = -1;
  30   return c;
  31 }