lib/strerror.c

   1 /* Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc.
   2      Written by James Clark (jjc@jclark.uucp)
   3
   4 This file is part of groff.
   5
   6 groff is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 1, or (at your option) any later
   9 version.
  10
  11 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License along
  17 with groff; see the file LICENSE.  If not, write to the Free Software
  18 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
  19
  20 #include "lib.h"
  21
  22 extern int sys_nerr;
  23 extern char *sys_errlist[];
  24
  25 char *strerror(n)
  26      int n;
  27 {
  28   static char buf[sizeof("Error ") + 1 + INT_DIGITS];
  29   if (n >= 0 && n < sys_nerr && sys_errlist[n] != 0)
  30     return sys_errlist[n];
  31   else {
  32     sprintf(buf, "Error %d", n);
  33     return buf;
  34   }
  35 }