/*      $NetBSD: stdio.h,v 1.104 2021/09/11 20:05:33 rillig Exp $       */

/*-
 * Copyright (c) 1990, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Chris Torek.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)stdio.h     8.5 (Berkeley) 4/29/95
 */

#ifndef _STDIO_H_
#define _STDIO_H_

#include <sys/cdefs.h>
#include <sys/featuretest.h>
#include <sys/ansi.h>

#if (!defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
    !defined(_XOPEN_SOURCE)) || ((_POSIX_C_SOURCE - 0) >= 200809L || \
     defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L || \
     (__cplusplus - 0) >= 201103L || defined(_NETBSD_SOURCE))
#define __STDIO_C99_FEATURES
#endif

#ifdef  _BSD_SIZE_T_
typedef _BSD_SIZE_T_    size_t;
#undef  _BSD_SIZE_T_
#endif
#ifdef  _BSD_SSIZE_T_
typedef _BSD_SSIZE_T_   ssize_t;
#undef  _BSD_SSIZE_T_
#endif

#if defined(_POSIX_C_SOURCE)
#ifndef __VA_LIST_DECLARED
typedef __va_list va_list;
#define __VA_LIST_DECLARED
#endif
#endif

#include <sys/null.h>

typedef struct __sfpos {
        __off_t _pos;
        __mbstate_t _mbstate_in, _mbstate_out;
} fpos_t;

#define _FSTDIO                 /* Define for new stdio with functions. */

/*
 * NB: to fit things in six character monocase externals, the stdio
 * code uses the prefix `__s' for stdio objects, typically followed
 * by a three-character attempt at a mnemonic.
 */

/* stdio buffers */
struct __sbuf {
        unsigned char *_base;
        int     _size;
};

/*
 * stdio state variables.
 *
 * The following always hold:
 *
 *      if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
 *              _lbfsize is -_bf._size, else _lbfsize is 0
 *      if _flags&__SRD, _w is 0
 *      if _flags&__SWR, _r is 0
 *
 * This ensures that the getc and putc macros (or inline functions) never
 * try to write or read from a file that is in `read' or `write' mode.
 * (Moreover, they can, and do, automatically switch from read mode to
 * write mode, and back, on "r+" and "w+" files.)
 *
 * _lbfsize is used only to make the inline line-buffered output stream
 * code as compact as possible.
 *
 * _ub (via _ext and struct __sfileext), _up, and _ur are used when ungetc()
 * pushes back more characters than fit in the current _bf, or when ungetc()
 * pushes back a character that does not match the previous one in _bf.
 * When this happens, _ext._base becomes non-nil (i.e., a stream has ungetc()
 * data iff _ub._base != NULL) and _up and _ur save the current values of _p
 * and _r.
 */
typedef struct __sFILE {
        unsigned char *_p;      /* current position in (some) buffer */
        int     _r;             /* read space left for getc() */
        int     _w;             /* write space left for putc() */
        unsigned short _flags;  /* flags, below; this FILE is free if 0 */
        short   _file;          /* fileno, if Unix descriptor, else -1 */
        struct  __sbuf _bf;     /* the buffer (at least 1 byte, if !NULL) */
        int     _lbfsize;       /* 0 or -_bf._size, for inline putc */

        /* operations */
        void    *_cookie;       /* cookie passed to io functions */
        int     (*_close)(void *);
        ssize_t (*_read) (void *, void *, size_t);
        __off_t (*_seek) (void *, __off_t, int);
        ssize_t (*_write)(void *, const void *, size_t);

        /* file extension */
        struct  __sbuf _ext;

        /* separate buffer for long sequences of ungetc() */
        unsigned char *_up;     /* saved _p when _p is doing ungetc data */
        int     _ur;            /* saved _r when _r is counting ungetc data */

        /* tricks to meet minimum requirements even when malloc() fails */
        unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
        unsigned char _nbuf[1]; /* guarantee a getc() buffer */

        int     (*_flush)(void *);
        /* Formerly used by fgetln/fgetwln; kept for binary compatibility */
        char    _lb_unused[sizeof(struct __sbuf) - sizeof(int (*)(void *))];

        /* Unix stdio files get aligned to block boundaries on fseek() */
        int     _blksize;       /* stat.st_blksize (may be != _bf._size) */
        __off_t _offset;        /* current lseek offset */
} FILE;

__BEGIN_DECLS
extern FILE __sF[3];
__END_DECLS

#define __SLBF  0x0001          /* line buffered */
#define __SNBF  0x0002          /* unbuffered */
#define __SRD   0x0004          /* OK to read */
#define __SWR   0x0008          /* OK to write */
        /* RD and WR are never simultaneously asserted */
#define __SRW   0x0010          /* open for reading & writing */
#define __SEOF  0x0020          /* found EOF */
#define __SERR  0x0040          /* found error */
#define __SMBF  0x0080          /* _buf is from malloc */
#define __SAPP  0x0100          /* fdopen()ed in append mode */
#define __SSTR  0x0200          /* this is an sprintf/snprintf string */
#define __SOPT  0x0400          /* do fseek() optimization */
#define __SNPT  0x0800          /* do not do fseek() optimization */
#define __SOFF  0x1000          /* set iff _offset is in fact correct */
#define __SMOD  0x2000          /* true => fgetln modified _p text */
#define __SALC  0x4000          /* allocate string space dynamically */

/*
 * The following three definitions are for ANSI C, which took them
 * from System V, which brilliantly took internal interface macros and
 * made them official arguments to setvbuf(), without renaming them.
 * Hence, these ugly _IOxxx names are *supposed* to appear in user code.
 *
 * Although numbered as their counterparts above, the implementation
 * does not rely on this.
 */
#define _IOFBF  0               /* setvbuf should set fully buffered */
#define _IOLBF  1               /* setvbuf should set line buffered */
#define _IONBF  2               /* setvbuf should set unbuffered */

#define BUFSIZ  1024            /* size of buffer used by setbuf */
#define EOF     (-1)

/*
 * FOPEN_MAX is a minimum maximum, and is the number of streams that
 * stdio can provide without attempting to allocate further resources
 * (which could fail).  Do not use this for anything.
 */
                                /* must be == _POSIX_STREAM_MAX <limits.h> */
#define FOPEN_MAX       20      /* must be <= OPEN_MAX <sys/syslimits.h> */
#define FILENAME_MAX    1024    /* must be <= PATH_MAX <sys/syslimits.h> */

/* System V/ANSI C; this is the wrong way to do this, do *not* use these. */
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
#define P_tmpdir        "/tmp/"
#endif
#define L_tmpnam        1024    /* XXX must be == PATH_MAX */
/* Always ensure that this is consistent with <limits.h> */
#ifndef TMP_MAX
#define TMP_MAX                 308915776       /* Legacy */
#endif

/* Always ensure that these are consistent with <fcntl.h> and <unistd.h>! */
#ifndef SEEK_SET
#define SEEK_SET        0       /* set file offset to offset */
#endif
#ifndef SEEK_CUR
#define SEEK_CUR        1       /* set file offset to current plus offset */
#endif
#ifndef SEEK_END
#define SEEK_END        2       /* set file offset to EOF plus offset */
#endif

#define stdin   (&__sF[0])
#define stdout  (&__sF[1])
#define stderr  (&__sF[2])

/*
 * Functions defined in ANSI C standard.
 */
__BEGIN_DECLS
void     clearerr(FILE *);
int      fclose(FILE *);
int      feof(FILE *);
int      ferror(FILE *);
int      fflush(FILE *);
int      fgetc(FILE *);
char    *fgets(char * __restrict, int, FILE * __restrict);
FILE    *fopen(const char * __restrict , const char * __restrict);
int      fprintf(FILE * __restrict, const char * __restrict, ...)
                __printflike(2, 3);
int      fputc(int, FILE *);
int      fputs(const char * __restrict, FILE * __restrict);
size_t   fread(void * __restrict, size_t, size_t, FILE * __restrict);
FILE    *freopen(const char * __restrict, const char * __restrict,
            FILE * __restrict);
int      fscanf(FILE * __restrict, const char * __restrict, ...)
                __scanflike(2, 3);
int      fseek(FILE *, long, int);
long     ftell(FILE *);
size_t   fwrite(const void * __restrict, size_t, size_t, FILE * __restrict);
int      getc(FILE *);
int      getchar(void);
void     perror(const char *);
int      printf(const char * __restrict, ...)
                __printflike(1, 2);
int      putc(int, FILE *);
int      putchar(int);
int      puts(const char *);
int      remove(const char *);
void     rewind(FILE *);
int      scanf(const char * __restrict, ...)
                __scanflike(1, 2);
void     setbuf(FILE * __restrict, char * __restrict);
int      setvbuf(FILE * __restrict, char * __restrict, int, size_t);
int      sscanf(const char * __restrict, const char * __restrict, ...)
                __scanflike(2, 3);
FILE    *tmpfile(void);
int      ungetc(int, FILE *);
int      vfprintf(FILE * __restrict, const char * __restrict, __va_list)
                __printflike(2, 0);
int      vprintf(const char * __restrict, __va_list)
                __printflike(1, 0);

#ifndef __AUDIT__
char    *gets(char *);
int      sprintf(char * __restrict, const char * __restrict, ...)
                __printflike(2, 3);
char    *tmpnam(char *);
int      vsprintf(char * __restrict, const char * __restrict,
    __va_list)
                __printflike(2, 0);
#endif

#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE)
int      rename (const char *, const char *) __RENAME(__posix_rename);
#else
int      rename (const char *, const char *);
#endif
__END_DECLS

#ifndef __LIBC12_SOURCE__
int      fgetpos(FILE * __restrict, fpos_t * __restrict) __RENAME(__fgetpos50);
int      fsetpos(FILE *, const fpos_t *) __RENAME(__fsetpos50);
#endif
/*
 * IEEE Std 1003.1-90
 */
#if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
    defined(_NETBSD_SOURCE)
#define L_ctermid       1024    /* size for ctermid(); PATH_MAX */
#define L_cuserid       9       /* size for cuserid(); UT_NAMESIZE + 1 */

__BEGIN_DECLS
char    *ctermid(char *);
#ifndef __CUSERID_DECLARED
#define __CUSERID_DECLARED
/* also declared in unistd.h */
char    *cuserid(char *);
#endif /* __CUSERID_DECLARED */
FILE    *fdopen(int, const char *);
int      fileno(FILE *);
__END_DECLS
#endif /* not ANSI */

/*
 * IEEE Std 1003.1c-95, also adopted by X/Open CAE Spec Issue 5 Version 2
 */
#if defined(__STDIO_C99_FEATURES) || (_POSIX_C_SOURCE - 0) >= 199506L || \
    (_XOPEN_SOURCE - 0) >= 500 || defined(_REENTRANT)
__BEGIN_DECLS
void    flockfile(FILE *);
int     ftrylockfile(FILE *);
void    funlockfile(FILE *);
int     getc_unlocked(FILE *);
int     getchar_unlocked(void);
int     putc_unlocked(int, FILE *);
int     putchar_unlocked(int);
__END_DECLS
#endif /* C99 || _POSIX_C_SOURCE >= 199506 || _XOPEN_SOURCE >= 500 || ... */

/*
 * Functions defined in POSIX 1003.2 and XPG2 or later.
 */
#if (_POSIX_C_SOURCE - 0) >= 2 || (_XOPEN_SOURCE - 0) >= 2 || \
    defined(_NETBSD_SOURCE)
__BEGIN_DECLS
int      pclose(FILE *);
FILE    *popen(const char *, const char *);
__END_DECLS
#endif
#ifdef _NETBSD_SOURCE
__BEGIN_DECLS
FILE    *popenve(const char *, char *const *, char *const *, const char *);
__END_DECLS
#endif

/*
 * Functions defined in XPG4.2, ISO C99, POSIX 1003.1-2001 or later.
 */
#if defined(__STDIO_C99_FEATURES) || (_POSIX_C_SOURCE - 0) >= 200112L || \
    (defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
    (_XOPEN_SOURCE - 0) >= 500
__BEGIN_DECLS
int      snprintf(char * __restrict, size_t, const char * __restrict, ...)
                __printflike(3, 4);
int      vsnprintf(char * __restrict, size_t, const char * __restrict,
            __va_list)
                __printflike(3, 0);
__END_DECLS
#endif

/*
 * Functions defined in XPG4.2.
 */
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
__BEGIN_DECLS
int      getw(FILE *);
int      putw(int, FILE *);

#ifndef __AUDIT__
char    *tempnam(const char *, const char *);
#endif
__END_DECLS
#endif

/*
 * X/Open CAE Specification Issue 5 Version 2
 */
#if (_POSIX_C_SOURCE - 0) >= 200112L || (_XOPEN_SOURCE - 0) >= 500 || \
    defined(_NETBSD_SOURCE)
#ifndef off_t
typedef __off_t         off_t;
#define off_t           __off_t
#endif /* off_t */

__BEGIN_DECLS
int      fseeko(FILE *, off_t, int);
off_t    ftello(FILE *);
__END_DECLS
#endif /* (_POSIX_C_SOURCE - 0) >= 200112L || _XOPEN_SOURCE >= 500 || ... */

/*
 * Functions defined in ISO C99.
 */
#if defined(__STDIO_C99_FEATURES)
__BEGIN_DECLS
int      vscanf(const char * __restrict, __va_list)
                __scanflike(1, 0);
int      vfscanf(FILE * __restrict, const char * __restrict, __va_list)
                __scanflike(2, 0);
int      vsscanf(const char * __restrict, const char * __restrict,
    __va_list)
    __scanflike(2, 0);
__END_DECLS
#endif /* C99 */

/*
 * Routines that are purely local.
 */
#if defined(_NETBSD_SOURCE)

#define FPARSELN_UNESCESC       0x01
#define FPARSELN_UNESCCONT      0x02
#define FPARSELN_UNESCCOMM      0x04
#define FPARSELN_UNESCREST      0x08
#define FPARSELN_UNESCALL       0x0f

__BEGIN_DECLS
int      asprintf(char ** __restrict, const char * __restrict, ...)
                __printflike(2, 3);
char    *fgetln(FILE * __restrict, size_t * __restrict);
char    *fparseln(FILE *, size_t *, size_t *, const char[3], int);
int      fpurge(FILE *);
void     setbuffer(FILE *, char *, int);
int      setlinebuf(FILE *);
int      vasprintf(char ** __restrict, const char * __restrict,
    __va_list)
                __printflike(2, 0);
const char *fmtcheck(const char *, const char *)
                __format_arg(2);
__END_DECLS

/*
 * Stdio function-access interface.
 */
__BEGIN_DECLS
FILE    *funopen(const void *,
    int (*)(void *, char *, int),
    int (*)(void *, const char *, int),
    off_t (*)(void *, off_t, int),
    int (*)(void *));
FILE    *funopen2(const void *,
    ssize_t (*)(void *, void *, size_t),
    ssize_t (*)(void *, const void *, size_t),
    off_t (*)(void *, off_t, int),
    int (*)(void *),
    int (*)(void *));
__END_DECLS
#define fropen(cookie, fn) funopen(cookie, fn, 0, 0, 0)
#define fwopen(cookie, fn) funopen(cookie, 0, fn, 0, 0)
#define fropen2(cookie, fn) funopen2(cookie, fn, 0, 0, 0, 0)
#define fwopen2(cookie, fn) funopen2(cookie, 0, fn, 0, 0, 0)
#endif /* _NETBSD_SOURCE */

/*
 * Functions internal to the implementation.
 */
__BEGIN_DECLS
int     __srget(FILE *);
int     __swbuf(int, FILE *);
__END_DECLS

/*
 * The __sfoo macros are here so that we can 
 * define function versions in the C library.
 */
#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
#if defined(__GNUC__) && defined(__STDC__)
static __inline int __sputc(int _c, FILE *_p) {
        if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
                return *_p->_p++ = (unsigned char)_c;
        else
                return __swbuf(_c, _p);
}
#else
/*
 * This has been tuned to generate reasonable code on the vax using pcc.
 */
#define __sputc(c, p) \
        (--(p)->_w < 0 ? \
                (p)->_w >= (p)->_lbfsize ? \
                        (*(p)->_p = (c)), *(p)->_p != '\n' ? \
                                (int)*(p)->_p++ : \
                                __swbuf('\n', p) : \
                        __swbuf((int)(c), p) : \
                (*(p)->_p = (c), (int)*(p)->_p++))
#endif

#define __sfeof(p)      (((p)->_flags & __SEOF) != 0)
#define __sferror(p)    (((p)->_flags & __SERR) != 0)
#define __sclearerr(p)  ((void)((p)->_flags &= (unsigned short)~(__SERR|__SEOF)))
#define __sfileno(p)    \
    ((p)->_file == -1 ? -1 : (int)(unsigned short)(p)->_file)

#if !defined(__lint__) && !defined(__cplusplus)
#if !defined(_REENTRANT) && !defined(_PTHREADS)
#define feof(p)         __sfeof(p)
#define ferror(p)       __sferror(p)
#define clearerr(p)     __sclearerr(p)

#define getc(fp)        __sgetc(fp)
#define putc(x, fp)     __sputc(x, fp)
#endif /* !_REENTRANT && !_PTHREADS */

#define getchar()       getc(stdin)
#define putchar(x)      putc(x, stdout)

#endif /* !__lint__ && !__cplusplus */

#if (defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \
    defined(_NETBSD_SOURCE)) && !defined(__cplusplus)
#if !defined(_REENTRANT) && !defined(_PTHREADS)
#define fileno(p)       __sfileno(p)
#endif /* !_REENTRANT && !_PTHREADS */
#endif /* !_ANSI_SOURCE && !__cplusplus*/

#if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE)
__BEGIN_DECLS
int      vdprintf(int, const char * __restrict, __va_list)
                __printflike(2, 0);
int      dprintf(int, const char * __restrict, ...)
                __printflike(2, 3);
__END_DECLS
#endif /* (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE) */

#if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \
    defined(_REENTRANT) || defined(_NETBSD_SOURCE) && !defined(__cplusplus)
#define getc_unlocked(fp)       __sgetc(fp)
#define putc_unlocked(x, fp)    __sputc(x, fp)

#define getchar_unlocked()      getc_unlocked(stdin)
#define putchar_unlocked(x)     putc_unlocked(x, stdout)
#endif /* _POSIX_C_SOURCE >= 199506 || _XOPEN_SOURCE >= 500 || _REENTRANT... */

#if (_POSIX_C_SOURCE - 0) >= 200809L || (_XOPEN_SOURCE - 0) >= 700 || \
    defined(_NETBSD_SOURCE)
__BEGIN_DECLS
FILE *fmemopen(void * __restrict, size_t, const char * __restrict);
FILE *open_memstream(char **, size_t *);
ssize_t  getdelim(char ** __restrict, size_t * __restrict, int,
            FILE * __restrict);
ssize_t  getline(char ** __restrict, size_t * __restrict, FILE * __restrict);
__END_DECLS
#endif

#if (_POSIX_C_SOURCE - 0) >= 200809L || defined(_NETBSD_SOURCE)
#  ifndef __LOCALE_T_DECLARED
typedef struct _locale          *locale_t;
#  define __LOCALE_T_DECLARED
#  endif
__BEGIN_DECLS
int      fprintf_l(FILE * __restrict, locale_t, const char * __restrict, ...)
                __printflike(3, 4);
int      vfprintf_l(FILE * __restrict, locale_t, const char * __restrict,
                __va_list) __printflike(3, 0);
int      printf_l(locale_t, const char * __restrict, ...)
                __printflike(2, 3);
int      vprintf_l(locale_t, const char * __restrict, __va_list)
                __printflike(2, 0);
int      asprintf_l(char ** __restrict, locale_t, const char * __restrict, ...)
                __printflike(3, 4);
int      vasprintf_l(char ** __restrict, locale_t, const char * __restrict,
    __va_list)
                __printflike(3, 0);
int      vdprintf_l(int, locale_t, const char * __restrict, __va_list)
                __printflike(3, 0);
int      dprintf_l(int, locale_t, const char * __restrict, ...)
                __printflike(3, 4);
int      snprintf_l(char * __restrict, size_t, locale_t,
                    const char * __restrict, ...) __printflike(4, 5);
int      vsnprintf_l(char * __restrict, size_t, locale_t,
                     const char * __restrict, __va_list) __printflike(4, 0);
#ifndef __AUDIT__
int      sprintf_l(char * __restrict, locale_t, const char * __restrict, ...)
                   __printflike(3, 4);
int      vsprintf_l(char * __restrict, locale_t, const char * __restrict,
                    __va_list) __printflike(3, 0);
#endif

int      fscanf_l(FILE * __restrict, locale_t, const char * __restrict, ...)
    __scanflike(3, 4);
int      scanf_l(locale_t, const char * __restrict, ...)
    __scanflike(2, 3);
int      sscanf_l(const char * __restrict, locale_t,
    const char * __restrict, ...) __scanflike(3, 4);
int      vscanf_l(locale_t, const char * __restrict, __va_list)
    __scanflike(2, 0);
int      vfscanf_l(FILE * __restrict, locale_t, const char * __restrict,
    __va_list) __scanflike(3, 0);
int      vsscanf_l(const char * __restrict, locale_t, const char * __restrict,
    __va_list) __scanflike(3, 0);
#ifdef _NETBSD_SOURCE
int     snprintf_ss(char *restrict, size_t, const char * __restrict, ...)
    __printflike(3, 4);
int     vsnprintf_ss(char *restrict, size_t, const char * __restrict, __va_list)
    __printflike(3, 0);
#endif
__END_DECLS
#endif

#if _FORTIFY_SOURCE > 0
#include <ssp/stdio.h>
#endif

#endif /* _STDIO_H_ */