diplodocus.org Git - nmh/blob - sbr/strerror.c

   1
   2 /*
   3  * strerror.c -- get error message string
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13
  14 extern int sys_nerr;
  15 extern char *sys_errlist[];
  16
  17
  18 char *
  19 strerror (int errnum)
  20 {
  21    if (errnum > 0 && errnum < sys_nerr)
  22         return sys_errlist[errnum];
  23    else
  24         return NULL;
  25 }