xref: /netbsd-src/external/gpl2/groff/dist/src/libs/libgroff/strerror.c (revision 89a07cf815a29524268025a1139fac4c5190f765)
1 /*	$NetBSD: strerror.c,v 1.1.1.1 2016/01/13 18:41:48 christos Exp $	*/
2 
3 /* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2003
4    Free Software Foundation, Inc.
5      Written by James Clark (jjc@jclark.com)
6 
7 This file is part of groff.
8 
9 groff is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 2, or (at your option) any later
12 version.
13 
14 groff is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
17 for more details.
18 
19 You should have received a copy of the GNU General Public License along
20 with groff; see the file COPYING.  If not, write to the Free Software
21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
22 
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
26 
27 #include <stdio.h>
28 #include <errno.h>
29 #include <stdlib.h>		/* for MinGW */
30 
31 #define INT_DIGITS 19		/* enough for 64 bit integer */
32 
33 #ifndef HAVE_SYS_NERR
34 extern int sys_nerr;
35 #endif
36 #ifndef HAVE_SYS_ERRLIST
37 extern char *sys_errlist[];
38 #endif
39 
strerror(n)40 char *strerror(n)
41      int n;
42 {
43   static char buf[sizeof("Error ") + 1 + INT_DIGITS];
44   if (n >= 0 && n < sys_nerr && sys_errlist[n] != 0)
45     return sys_errlist[n];
46   else {
47     sprintf(buf, "Error %d", n);
48     return buf;
49   }
50 }
51