libgloss/moxie/sim-inbyte.c

   1 /*
   2  * sim-inbyte.c -- read a character from standard input.
   3  *
   4  * Copyright (c) 2008 Anthony Green
   5  *
   6  * The authors hereby grant permission to use, copy, modify, distribute,
   7  * and license this software and its documentation for any purpose, provided
   8  * that existing copyright notices are retained in all copies and that this
   9  * notice is included verbatim in any distributions. No written agreement,
  10  * license, or royalty fee is required for any of the authorized uses.
  11  * Modifications to this software may be copyrighted by their authors
  12  * and need not follow the licensing terms described here, provided that
  13  * the new terms are clearly indicated on the first page of each file where
  14  * they apply.
  15  */
  16
  17 #include <stdlib.h>
  18
  19 #include <unistd.h>
  20
  21 int
  22 inbyte ()
  23 {
  24   char c;
  25
  26   if (read (0, &c, 1) <= 0)
  27     return -1;
  28
  29   return c;
  30 }