1 /*
2 Copyright (c) 2014-2017 Mentor Graphics.
3 
4 The authors hereby grant permission to use, copy, modify, distribute,
5 and license this software and its documentation for any purpose, provided
6 that existing copyright notices are retained in all copies and that this
7 notice is included verbatim in any distributions. No written agreement,
8 license, or royalty fee is required for any of the authorized uses.
9 Modifications to this software may be copyrighted by their authors
10 and need not follow the licensing terms described here, provided that
11 the new terms are clearly indicated on the first page of each file where
12 they apply.
13  */
14 #include <signal.h>
15 #include <errno.h>
16 
17 _sig_func_ptr
signal(int sig,_sig_func_ptr func)18 signal (int sig,
19 	_sig_func_ptr func)
20 {
21   errno = EINVAL;
22   return NULL;
23 }
24