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Octocat-spinner-32-eaf2f5

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/*
* Copyright (c) 1997, 98, 2000, 01
* Motoyuki Kasahara
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/

/*
* This program requires the following Autoconf macros:
* AC_C_CONST
* AC_HEADER_STDC
* AC_CHECK_HEADERS(string.h, memory.h)
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <errno.h>

#if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
#include <string.h>
#if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
#include <memory.h>
#endif /* not STDC_HEADERS and HAVE_MEMORY_H */
#else /* not STDC_HEADERS and not HAVE_STRING_H */
#include <strings.h>
#endif /* not STDC_HEADERS and not HAVE_STRING_H */

extern char *sys_errlist[];
extern int sys_nerr;


/*
* strerror() described in ISO 9899: 1990.
*/
char *
strerror(error_number)
    int error_number;
{
    if (0 < error_number && error_number <= sys_nerr)
        return sys_errlist[error_number];

    return "Unknown error";
}


/*
* perror() described in ISO 9899: 1990.
*/
void
perror(message)
    const char *message;
{
    if (message != NULL)
fprintf(stderr, "%s: ", message);

    if (0 < errno && errno <= sys_nerr) {
        fputs(sys_errlist[errno], stderr);
fputc('\n', stderr);
    } else
fputs("Unknown error\n", stderr);
}
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