gas/strerror.c

   1 /* Version of strerror() for systems that need it.
   2    Copyright (C) 1991, 1992 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 2 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, write to the Free Software
  16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18
  19 /*
  20
  21 NAME
  22
  23         strerror -- map an error number to an error message string
  24
  25 SYNOPSIS
  26
  27         #include <string.h>
  28
  29         char *strerror (int errnum)
  30
  31 DESCRIPTION
  32
  33         Returns a pointer to a string containing an error message, the
  34         contents of which are implementation defined.  The implementation
  35         shall behave as if no library function calls strerror.  The string
  36         pointed to shall not be modified by the caller and is only guaranteed
  37         to be valid until a subsequent call to strerror.
  38
  39 BUGS
  40
  41         Requires that the system have sys_errlist and sys_nerr.
  42
  43 */
  44
  45 #ifndef HAVE_STRERROR
  46
  47 extern int sys_nerr;
  48 extern char *sys_errlist[];
  49
  50 char *
  51 strerror (code)
  52      int code;
  53 {
  54   return (((code < 0) || (code >= sys_nerr))
  55           ? "(unknown error)"
  56           : sys_errlist[code]);
  57 }
  58
  59 #endif /* HAVE_STRERROR */
  60
  61 /* end of strerror.c */