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  1. /* Define ISO C stdio on top of C++ iostreams.
  2.    Copyright (C) 1991-2014 Free Software Foundation, Inc.
  3.    This file is part of the GNU C Library.
  4.  
  5.    The GNU C Library is free software; you can redistribute it and/or
  6.    modify it under the terms of the GNU Lesser General Public
  7.    License as published by the Free Software Foundation; either
  8.    version 2.1 of the License, or (at your option) any later version.
  9.  
  10.    The GNU C Library is distributed in the hope that it will be useful,
  11.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13.    Lesser General Public License for more details.
  14.  
  15.    You should have received a copy of the GNU Lesser General Public
  16.    License along with the GNU C Library; if not, see
  17.    <http://www.gnu.org/licenses/>.  */
  18.  
  19. /*
  20.  *  ISO C99 Standard: 7.19 Input/output <stdio.h>
  21.  */
  22.  
  23. #ifndef _STDIO_H
  24.  
  25. #if !defined __need_FILE && !defined __need___FILE
  26. # define _STDIO_H   1
  27. # include <features.h>
  28.  
  29. __BEGIN_DECLS
  30.  
  31. # define __need_size_t
  32. # define __need_NULL
  33. # include <stddef.h>
  34.  
  35. # include <bits/types.h>
  36. # define __need_FILE
  37. # define __need___FILE
  38. #endif /* Don't need FILE.  */
  39.  
  40.  
  41. #if !defined __FILE_defined && defined __need_FILE
  42.  
  43. /* Define outside of namespace so the C++ is happy.  */
  44. struct _IO_FILE;
  45.  
  46. __BEGIN_NAMESPACE_STD
  47. /* The opaque type of streams.  This is the definition used elsewhere.  */
  48. typedef struct _IO_FILE FILE;
  49. __END_NAMESPACE_STD
  50. #if defined __USE_LARGEFILE64 || defined __USE_SVID || defined __USE_POSIX \
  51.     || defined __USE_BSD || defined __USE_ISOC99 || defined __USE_XOPEN \
  52.     || defined __USE_POSIX2
  53. __USING_NAMESPACE_STD(FILE)
  54. #endif
  55.  
  56. # define __FILE_defined 1
  57. #endif /* FILE not defined.  */
  58. #undef  __need_FILE
  59.  
  60.  
  61. #if !defined ____FILE_defined && defined __need___FILE
  62.  
  63. /* The opaque type of streams.  This is the definition used elsewhere.  */
  64. typedef struct _IO_FILE __FILE;
  65.  
  66. # define ____FILE_defined   1
  67. #endif /* __FILE not defined.  */
  68. #undef  __need___FILE
  69.  
  70.  
  71. #ifdef  _STDIO_H
  72. #define _STDIO_USES_IOSTREAM
  73.  
  74. #include <libio.h>
  75.  
  76. #if defined __USE_XOPEN || defined __USE_XOPEN2K8
  77. # ifdef __GNUC__
  78. #  ifndef _VA_LIST_DEFINED
  79. typedef _G_va_list va_list;
  80. #   define _VA_LIST_DEFINED
  81. #  endif
  82. # else
  83. #  include <stdarg.h>
  84. # endif
  85. #endif
  86.  
  87. #ifdef __USE_XOPEN2K8
  88. # ifndef __off_t_defined
  89. # ifndef __USE_FILE_OFFSET64
  90. typedef __off_t off_t;
  91. # else
  92. typedef __off64_t off_t;
  93. # endif
  94. # define __off_t_defined
  95. # endif
  96. # if defined __USE_LARGEFILE64 && !defined __off64_t_defined
  97. typedef __off64_t off64_t;
  98. # define __off64_t_defined
  99. # endif
  100.  
  101. # ifndef __ssize_t_defined
  102. typedef __ssize_t ssize_t;
  103. # define __ssize_t_defined
  104. # endif
  105. #endif
  106.  
  107. /* The type of the second argument to `fgetpos' and `fsetpos'.  */
  108. __BEGIN_NAMESPACE_STD
  109. #ifndef __USE_FILE_OFFSET64
  110. typedef _G_fpos_t fpos_t;
  111. #else
  112. typedef _G_fpos64_t fpos_t;
  113. #endif
  114. __END_NAMESPACE_STD
  115. #ifdef __USE_LARGEFILE64
  116. typedef _G_fpos64_t fpos64_t;
  117. #endif
  118.  
  119. /* The possibilities for the third argument to `setvbuf'.  */
  120. #define _IOFBF 0        /* Fully buffered.  */
  121. #define _IOLBF 1        /* Line buffered.  */
  122. #define _IONBF 2        /* No buffering.  */
  123.  
  124.  
  125. /* Default buffer size.  */
  126. #ifndef BUFSIZ
  127. # define BUFSIZ _IO_BUFSIZ
  128. #endif
  129.  
  130.  
  131. /* End of file character.
  132.    Some things throughout the library rely on this being -1.  */
  133. #ifndef EOF
  134. # define EOF (-1)
  135. #endif
  136.  
  137.  
  138. /* The possibilities for the third argument to `fseek'.
  139.    These values should not be changed.  */
  140. #define SEEK_SET    0   /* Seek from beginning of file.  */
  141. #define SEEK_CUR    1   /* Seek from current position.  */
  142. #define SEEK_END    2   /* Seek from end of file.  */
  143. #ifdef __USE_GNU
  144. # define SEEK_DATA  3   /* Seek to next data.  */
  145. # define SEEK_HOLE  4   /* Seek to next hole.  */
  146. #endif
  147.  
  148.  
  149. #if defined __USE_SVID || defined __USE_XOPEN
  150. /* Default path prefix for `tempnam' and `tmpnam'.  */
  151. # define P_tmpdir   "/tmp"
  152. #endif
  153.  
  154.  
  155. /* Get the values:
  156.    L_tmpnam How long an array of chars must be to be passed to `tmpnam'.
  157.    TMP_MAX  The minimum number of unique filenames generated by tmpnam
  158.         (and tempnam when it uses tmpnam's name space),
  159.         or tempnam (the two are separate).
  160.    L_ctermid    How long an array to pass to `ctermid'.
  161.    L_cuserid    How long an array to pass to `cuserid'.
  162.    FOPEN_MAX    Minimum number of files that can be open at once.
  163.    FILENAME_MAX Maximum length of a filename.  */
  164. #include <bits/stdio_lim.h>
  165.  
  166.  
  167. /* Standard streams.  */
  168. extern struct _IO_FILE *stdin;      /* Standard input stream.  */
  169. extern struct _IO_FILE *stdout;     /* Standard output stream.  */
  170. extern struct _IO_FILE *stderr;     /* Standard error output stream.  */
  171. /* C89/C99 say they're macros.  Make them happy.  */
  172. #define stdin stdin
  173. #define stdout stdout
  174. #define stderr stderr
  175.  
  176. __BEGIN_NAMESPACE_STD
  177. /* Remove file FILENAME.  */
  178. extern int remove (const char *__filename) __THROW;
  179. /* Rename file OLD to NEW.  */
  180. extern int rename (const char *__old, const char *__new) __THROW;
  181. __END_NAMESPACE_STD
  182.  
  183. #ifdef __USE_ATFILE
  184. /* Rename file OLD relative to OLDFD to NEW relative to NEWFD.  */
  185. extern int renameat (int __oldfd, const char *__old, int __newfd,
  186.              const char *__new) __THROW;
  187. #endif
  188.  
  189. __BEGIN_NAMESPACE_STD
  190. /* Create a temporary file and open it read/write.
  191.  
  192.    This function is a possible cancellation point and therefore not
  193.    marked with __THROW.  */
  194. #ifndef __USE_FILE_OFFSET64
  195. extern FILE *tmpfile (void) __wur;
  196. #else
  197. # ifdef __REDIRECT
  198. extern FILE *__REDIRECT (tmpfile, (void), tmpfile64) __wur;
  199. # else
  200. #  define tmpfile tmpfile64
  201. # endif
  202. #endif
  203.  
  204. #ifdef __USE_LARGEFILE64
  205. extern FILE *tmpfile64 (void) __wur;
  206. #endif
  207.  
  208. /* Generate a temporary filename.  */
  209. extern char *tmpnam (char *__s) __THROW __wur;
  210. __END_NAMESPACE_STD
  211.  
  212. #ifdef __USE_MISC
  213. /* This is the reentrant variant of `tmpnam'.  The only difference is
  214.    that it does not allow S to be NULL.  */
  215. extern char *tmpnam_r (char *__s) __THROW __wur;
  216. #endif
  217.  
  218.  
  219. #if defined __USE_SVID || defined __USE_XOPEN
  220. /* Generate a unique temporary filename using up to five characters of PFX
  221.    if it is not NULL.  The directory to put this file in is searched for
  222.    as follows: First the environment variable "TMPDIR" is checked.
  223.    If it contains the name of a writable directory, that directory is used.
  224.    If not and if DIR is not NULL, that value is checked.  If that fails,
  225.    P_tmpdir is tried and finally "/tmp".  The storage for the filename
  226.    is allocated by `malloc'.  */
  227. extern char *tempnam (const char *__dir, const char *__pfx)
  228.      __THROW __attribute_malloc__ __wur;
  229. #endif
  230.  
  231.  
  232. __BEGIN_NAMESPACE_STD
  233. /* Close STREAM.
  234.  
  235.    This function is a possible cancellation point and therefore not
  236.    marked with __THROW.  */
  237. extern int fclose (FILE *__stream);
  238. /* Flush STREAM, or all streams if STREAM is NULL.
  239.  
  240.    This function is a possible cancellation point and therefore not
  241.    marked with __THROW.  */
  242. extern int fflush (FILE *__stream);
  243. __END_NAMESPACE_STD
  244.  
  245. #ifdef __USE_MISC
  246. /* Faster versions when locking is not required.
  247.  
  248.    This function is not part of POSIX and therefore no official
  249.    cancellation point.  But due to similarity with an POSIX interface
  250.    or due to the implementation it is a cancellation point and
  251.    therefore not marked with __THROW.  */
  252. extern int fflush_unlocked (FILE *__stream);
  253. #endif
  254.  
  255. #ifdef __USE_GNU
  256. /* Close all streams.
  257.  
  258.    This function is not part of POSIX and therefore no official
  259.    cancellation point.  But due to similarity with an POSIX interface
  260.    or due to the implementation it is a cancellation point and
  261.    therefore not marked with __THROW.  */
  262. extern int fcloseall (void);
  263. #endif
  264.  
  265.  
  266. __BEGIN_NAMESPACE_STD
  267. #ifndef __USE_FILE_OFFSET64
  268. /* Open a file and create a new stream for it.
  269.  
  270.    This function is a possible cancellation point and therefore not
  271.    marked with __THROW.  */
  272. extern FILE *fopen (const char *__restrict __filename,
  273.             const char *__restrict __modes) __wur;
  274. /* Open a file, replacing an existing stream with it.
  275.  
  276.    This function is a possible cancellation point and therefore not
  277.    marked with __THROW.  */
  278. extern FILE *freopen (const char *__restrict __filename,
  279.               const char *__restrict __modes,
  280.               FILE *__restrict __stream) __wur;
  281. #else
  282. # ifdef __REDIRECT
  283. extern FILE *__REDIRECT (fopen, (const char *__restrict __filename,
  284.                  const char *__restrict __modes), fopen64)
  285.   __wur;
  286. extern FILE *__REDIRECT (freopen, (const char *__restrict __filename,
  287.                    const char *__restrict __modes,
  288.                    FILE *__restrict __stream), freopen64)
  289.   __wur;
  290. # else
  291. #  define fopen fopen64
  292. #  define freopen freopen64
  293. # endif
  294. #endif
  295. __END_NAMESPACE_STD
  296. #ifdef __USE_LARGEFILE64
  297. extern FILE *fopen64 (const char *__restrict __filename,
  298.               const char *__restrict __modes) __wur;
  299. extern FILE *freopen64 (const char *__restrict __filename,
  300.             const char *__restrict __modes,
  301.             FILE *__restrict __stream) __wur;
  302. #endif
  303.  
  304. #ifdef  __USE_POSIX
  305. /* Create a new stream that refers to an existing system file descriptor.  */
  306. extern FILE *fdopen (int __fd, const char *__modes) __THROW __wur;
  307. #endif
  308.  
  309. #ifdef  __USE_GNU
  310. /* Create a new stream that refers to the given magic cookie,
  311.    and uses the given functions for input and output.  */
  312. extern FILE *fopencookie (void *__restrict __magic_cookie,
  313.               const char *__restrict __modes,
  314.               _IO_cookie_io_functions_t __io_funcs) __THROW __wur;
  315. #endif
  316.  
  317. #ifdef __USE_XOPEN2K8
  318. /* Create a new stream that refers to a memory buffer.  */
  319. extern FILE *fmemopen (void *__s, size_t __len, const char *__modes)
  320.   __THROW __wur;
  321.  
  322. /* Open a stream that writes into a malloc'd buffer that is expanded as
  323.    necessary.  *BUFLOC and *SIZELOC are updated with the buffer's location
  324.    and the number of characters written on fflush or fclose.  */
  325. extern FILE *open_memstream (char **__bufloc, size_t *__sizeloc) __THROW __wur;
  326. #endif
  327.  
  328.  
  329. __BEGIN_NAMESPACE_STD
  330. /* If BUF is NULL, make STREAM unbuffered.
  331.    Else make it use buffer BUF, of size BUFSIZ.  */
  332. extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __THROW;
  333. /* Make STREAM use buffering mode MODE.
  334.    If BUF is not NULL, use N bytes of it for buffering;
  335.    else allocate an internal buffer N bytes long.  */
  336. extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf,
  337.             int __modes, size_t __n) __THROW;
  338. __END_NAMESPACE_STD
  339.  
  340. #ifdef  __USE_BSD
  341. /* If BUF is NULL, make STREAM unbuffered.
  342.    Else make it use SIZE bytes of BUF for buffering.  */
  343. extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf,
  344.                size_t __size) __THROW;
  345.  
  346. /* Make STREAM line-buffered.  */
  347. extern void setlinebuf (FILE *__stream) __THROW;
  348. #endif
  349.  
  350.  
  351. __BEGIN_NAMESPACE_STD
  352. /* Write formatted output to STREAM.
  353.  
  354.    This function is a possible cancellation point and therefore not
  355.    marked with __THROW.  */
  356. extern int fprintf (FILE *__restrict __stream,
  357.             const char *__restrict __format, ...);
  358. /* Write formatted output to stdout.
  359.  
  360.    This function is a possible cancellation point and therefore not
  361.    marked with __THROW.  */
  362. extern int printf (const char *__restrict __format, ...);
  363. /* Write formatted output to S.  */
  364. extern int sprintf (char *__restrict __s,
  365.             const char *__restrict __format, ...) __THROWNL;
  366.  
  367. /* Write formatted output to S from argument list ARG.
  368.  
  369.    This function is a possible cancellation point and therefore not
  370.    marked with __THROW.  */
  371. extern int vfprintf (FILE *__restrict __s, const char *__restrict __format,
  372.              _G_va_list __arg);
  373. /* Write formatted output to stdout from argument list ARG.
  374.  
  375.    This function is a possible cancellation point and therefore not
  376.    marked with __THROW.  */
  377. extern int vprintf (const char *__restrict __format, _G_va_list __arg);
  378. /* Write formatted output to S from argument list ARG.  */
  379. extern int vsprintf (char *__restrict __s, const char *__restrict __format,
  380.              _G_va_list __arg) __THROWNL;
  381. __END_NAMESPACE_STD
  382.  
  383. #if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98
  384. __BEGIN_NAMESPACE_C99
  385. /* Maximum chars of output to write in MAXLEN.  */
  386. extern int snprintf (char *__restrict __s, size_t __maxlen,
  387.              const char *__restrict __format, ...)
  388.      __THROWNL __attribute__ ((__format__ (__printf__, 3, 4)));
  389.  
  390. extern int vsnprintf (char *__restrict __s, size_t __maxlen,
  391.               const char *__restrict __format, _G_va_list __arg)
  392.      __THROWNL __attribute__ ((__format__ (__printf__, 3, 0)));
  393. __END_NAMESPACE_C99
  394. #endif
  395.  
  396. #ifdef __USE_GNU
  397. /* Write formatted output to a string dynamically allocated with `malloc'.
  398.    Store the address of the string in *PTR.  */
  399. extern int vasprintf (char **__restrict __ptr, const char *__restrict __f,
  400.               _G_va_list __arg)
  401.      __THROWNL __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
  402. extern int __asprintf (char **__restrict __ptr,
  403.                const char *__restrict __fmt, ...)
  404.      __THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
  405. extern int asprintf (char **__restrict __ptr,
  406.              const char *__restrict __fmt, ...)
  407.      __THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
  408. #endif
  409.  
  410. #ifdef __USE_XOPEN2K8
  411. /* Write formatted output to a file descriptor.  */
  412. extern int vdprintf (int __fd, const char *__restrict __fmt,
  413.              _G_va_list __arg)
  414.      __attribute__ ((__format__ (__printf__, 2, 0)));
  415. extern int dprintf (int __fd, const char *__restrict __fmt, ...)
  416.      __attribute__ ((__format__ (__printf__, 2, 3)));
  417. #endif
  418.  
  419.  
  420. __BEGIN_NAMESPACE_STD
  421. /* Read formatted input from STREAM.
  422.  
  423.    This function is a possible cancellation point and therefore not
  424.    marked with __THROW.  */
  425. extern int fscanf (FILE *__restrict __stream,
  426.            const char *__restrict __format, ...) __wur;
  427. /* Read formatted input from stdin.
  428.  
  429.    This function is a possible cancellation point and therefore not
  430.    marked with __THROW.  */
  431. extern int scanf (const char *__restrict __format, ...) __wur;
  432. /* Read formatted input from S.  */
  433. extern int sscanf (const char *__restrict __s,
  434.            const char *__restrict __format, ...) __THROW;
  435.  
  436. #if defined __USE_ISOC99 && !defined __USE_GNU \
  437.     && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
  438.     && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
  439. # ifdef __REDIRECT
  440. /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
  441.    GNU extension which conflicts with valid %a followed by letter
  442.    s, S or [.  */
  443. extern int __REDIRECT (fscanf, (FILE *__restrict __stream,
  444.                 const char *__restrict __format, ...),
  445.                __isoc99_fscanf) __wur;
  446. extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
  447.                __isoc99_scanf) __wur;
  448. extern int __REDIRECT_NTH (sscanf, (const char *__restrict __s,
  449.                     const char *__restrict __format, ...),
  450.                __isoc99_sscanf);
  451. # else
  452. extern int __isoc99_fscanf (FILE *__restrict __stream,
  453.                 const char *__restrict __format, ...) __wur;
  454. extern int __isoc99_scanf (const char *__restrict __format, ...) __wur;
  455. extern int __isoc99_sscanf (const char *__restrict __s,
  456.                 const char *__restrict __format, ...) __THROW;
  457. #  define fscanf __isoc99_fscanf
  458. #  define scanf __isoc99_scanf
  459. #  define sscanf __isoc99_sscanf
  460. # endif
  461. #endif
  462.  
  463. __END_NAMESPACE_STD
  464.  
  465. #ifdef  __USE_ISOC99
  466. __BEGIN_NAMESPACE_C99
  467. /* Read formatted input from S into argument list ARG.
  468.  
  469.    This function is a possible cancellation point and therefore not
  470.    marked with __THROW.  */
  471. extern int vfscanf (FILE *__restrict __s, const char *__restrict __format,
  472.             _G_va_list __arg)
  473.      __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
  474.  
  475. /* Read formatted input from stdin into argument list ARG.
  476.  
  477.    This function is a possible cancellation point and therefore not
  478.    marked with __THROW.  */
  479. extern int vscanf (const char *__restrict __format, _G_va_list __arg)
  480.      __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
  481.  
  482. /* Read formatted input from S into argument list ARG.  */
  483. extern int vsscanf (const char *__restrict __s,
  484.             const char *__restrict __format, _G_va_list __arg)
  485.      __THROW __attribute__ ((__format__ (__scanf__, 2, 0)));
  486.  
  487. # if !defined __USE_GNU \
  488.      && (!defined __LDBL_COMPAT || !defined __REDIRECT) \
  489.      && (defined __STRICT_ANSI__ || defined __USE_XOPEN2K)
  490. #  ifdef __REDIRECT
  491. /* For strict ISO C99 or POSIX compliance disallow %as, %aS and %a[
  492.    GNU extension which conflicts with valid %a followed by letter
  493.    s, S or [.  */
  494. extern int __REDIRECT (vfscanf,
  495.                (FILE *__restrict __s,
  496.             const char *__restrict __format, _G_va_list __arg),
  497.                __isoc99_vfscanf)
  498.      __attribute__ ((__format__ (__scanf__, 2, 0))) __wur;
  499. extern int __REDIRECT (vscanf, (const char *__restrict __format,
  500.                 _G_va_list __arg), __isoc99_vscanf)
  501.      __attribute__ ((__format__ (__scanf__, 1, 0))) __wur;
  502. extern int __REDIRECT_NTH (vsscanf,
  503.                (const char *__restrict __s,
  504.                 const char *__restrict __format,
  505.                 _G_va_list __arg), __isoc99_vsscanf)
  506.      __attribute__ ((__format__ (__scanf__, 2, 0)));
  507. #  else
  508. extern int __isoc99_vfscanf (FILE *__restrict __s,
  509.                  const char *__restrict __format,
  510.                  _G_va_list __arg) __wur;
  511. extern int __isoc99_vscanf (const char *__restrict __format,
  512.                 _G_va_list __arg) __wur;
  513. extern int __isoc99_vsscanf (const char *__restrict __s,
  514.                  const char *__restrict __format,
  515.                  _G_va_list __arg) __THROW;
  516. #   define vfscanf __isoc99_vfscanf
  517. #   define vscanf __isoc99_vscanf
  518. #   define vsscanf __isoc99_vsscanf
  519. #  endif
  520. # endif
  521.  
  522. __END_NAMESPACE_C99
  523. #endif /* Use ISO C9x.  */
  524.  
  525.  
  526. __BEGIN_NAMESPACE_STD
  527. /* Read a character from STREAM.
  528.  
  529.    These functions are possible cancellation points and therefore not
  530.    marked with __THROW.  */
  531. extern int fgetc (FILE *__stream);
  532. extern int getc (FILE *__stream);
  533.  
  534. /* Read a character from stdin.
  535.  
  536.    This function is a possible cancellation point and therefore not
  537.    marked with __THROW.  */
  538. extern int getchar (void);
  539. __END_NAMESPACE_STD
  540.  
  541. /* The C standard explicitly says this is a macro, so we always do the
  542.    optimization for it.  */
  543. #define getc(_fp) _IO_getc (_fp)
  544.  
  545. #if defined __USE_POSIX || defined __USE_MISC
  546. /* These are defined in POSIX.1:1996.
  547.  
  548.    These functions are possible cancellation points and therefore not
  549.    marked with __THROW.  */
  550. extern int getc_unlocked (FILE *__stream);
  551. extern int getchar_unlocked (void);
  552. #endif /* Use POSIX or MISC.  */
  553.  
  554. #ifdef __USE_MISC
  555. /* Faster version when locking is not necessary.
  556.  
  557.    This function is not part of POSIX and therefore no official
  558.    cancellation point.  But due to similarity with an POSIX interface
  559.    or due to the implementation it is a cancellation point and
  560.    therefore not marked with __THROW.  */
  561. extern int fgetc_unlocked (FILE *__stream);
  562. #endif /* Use MISC.  */
  563.  
  564.  
  565. __BEGIN_NAMESPACE_STD
  566. /* Write a character to STREAM.
  567.  
  568.    These functions are possible cancellation points and therefore not
  569.    marked with __THROW.
  570.  
  571.    These functions is a possible cancellation point and therefore not
  572.    marked with __THROW.  */
  573. extern int fputc (int __c, FILE *__stream);
  574. extern int putc (int __c, FILE *__stream);
  575.  
  576. /* Write a character to stdout.
  577.  
  578.    This function is a possible cancellation point and therefore not
  579.    marked with __THROW.  */
  580. extern int putchar (int __c);
  581. __END_NAMESPACE_STD
  582.  
  583. /* The C standard explicitly says this can be a macro,
  584.    so we always do the optimization for it.  */
  585. #define putc(_ch, _fp) _IO_putc (_ch, _fp)
  586.  
  587. #ifdef __USE_MISC
  588. /* Faster version when locking is not necessary.
  589.  
  590.    This function is not part of POSIX and therefore no official
  591.    cancellation point.  But due to similarity with an POSIX interface
  592.    or due to the implementation it is a cancellation point and
  593.    therefore not marked with __THROW.  */
  594. extern int fputc_unlocked (int __c, FILE *__stream);
  595. #endif /* Use MISC.  */
  596.  
  597. #if defined __USE_POSIX || defined __USE_MISC
  598. /* These are defined in POSIX.1:1996.
  599.  
  600.    These functions are possible cancellation points and therefore not
  601.    marked with __THROW.  */
  602. extern int putc_unlocked (int __c, FILE *__stream);
  603. extern int putchar_unlocked (int __c);
  604. #endif /* Use POSIX or MISC.  */
  605.  
  606.  
  607. #if defined __USE_SVID || defined __USE_MISC \
  608.     || (defined __USE_XOPEN && !defined __USE_XOPEN2K)
  609. /* Get a word (int) from STREAM.  */
  610. extern int getw (FILE *__stream);
  611.  
  612. /* Write a word (int) to STREAM.  */
  613. extern int putw (int __w, FILE *__stream);
  614. #endif
  615.  
  616.  
  617. __BEGIN_NAMESPACE_STD
  618. /* Get a newline-terminated string of finite length from STREAM.
  619.  
  620.    This function is a possible cancellation point and therefore not
  621.    marked with __THROW.  */
  622. extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
  623.      __wur;
  624.  
  625. #if !defined __USE_ISOC11 \
  626.     || (defined __cplusplus && __cplusplus <= 201103L)
  627. /* Get a newline-terminated string from stdin, removing the newline.
  628.    DO NOT USE THIS FUNCTION!!  There is no limit on how much it will read.
  629.  
  630.    The function has been officially removed in ISO C11.  This opportunity
  631.    is used to also remove it from the GNU feature list.  It is now only
  632.    available when explicitly using an old ISO C, Unix, or POSIX standard.
  633.    GCC defines _GNU_SOURCE when building C++ code and the function is still
  634.    in C++11, so it is also available for C++.
  635.  
  636.    This function is a possible cancellation point and therefore not
  637.    marked with __THROW.  */
  638. extern char *gets (char *__s) __wur __attribute_deprecated__;
  639. #endif
  640. __END_NAMESPACE_STD
  641.  
  642. #ifdef __USE_GNU
  643. /* This function does the same as `fgets' but does not lock the stream.
  644.  
  645.    This function is not part of POSIX and therefore no official
  646.    cancellation point.  But due to similarity with an POSIX interface
  647.    or due to the implementation it is a cancellation point and
  648.    therefore not marked with __THROW.  */
  649. extern char *fgets_unlocked (char *__restrict __s, int __n,
  650.                  FILE *__restrict __stream) __wur;
  651. #endif
  652.  
  653.  
  654. #ifdef  __USE_XOPEN2K8
  655. /* Read up to (and including) a DELIMITER from STREAM into *LINEPTR
  656.    (and null-terminate it). *LINEPTR is a pointer returned from malloc (or
  657.    NULL), pointing to *N characters of space.  It is realloc'd as
  658.    necessary.  Returns the number of characters read (not including the
  659.    null terminator), or -1 on error or EOF.
  660.  
  661.    These functions are not part of POSIX and therefore no official
  662.    cancellation point.  But due to similarity with an POSIX interface
  663.    or due to the implementation they are cancellation points and
  664.    therefore not marked with __THROW.  */
  665. extern _IO_ssize_t __getdelim (char **__restrict __lineptr,
  666.                    size_t *__restrict __n, int __delimiter,
  667.                    FILE *__restrict __stream) __wur;
  668. extern _IO_ssize_t getdelim (char **__restrict __lineptr,
  669.                  size_t *__restrict __n, int __delimiter,
  670.                  FILE *__restrict __stream) __wur;
  671.  
  672. /* Like `getdelim', but reads up to a newline.
  673.  
  674.    This function is not part of POSIX and therefore no official
  675.    cancellation point.  But due to similarity with an POSIX interface
  676.    or due to the implementation it is a cancellation point and
  677.    therefore not marked with __THROW.  */
  678. extern _IO_ssize_t getline (char **__restrict __lineptr,
  679.                 size_t *__restrict __n,
  680.                 FILE *__restrict __stream) __wur;
  681. #endif
  682.  
  683.  
  684. __BEGIN_NAMESPACE_STD
  685. /* Write a string to STREAM.
  686.  
  687.    This function is a possible cancellation point and therefore not
  688.    marked with __THROW.  */
  689. extern int fputs (const char *__restrict __s, FILE *__restrict __stream);
  690.  
  691. /* Write a string, followed by a newline, to stdout.
  692.  
  693.    This function is a possible cancellation point and therefore not
  694.    marked with __THROW.  */
  695. extern int puts (const char *__s);
  696.  
  697.  
  698. /* Push a character back onto the input buffer of STREAM.
  699.  
  700.    This function is a possible cancellation point and therefore not
  701.    marked with __THROW.  */
  702. extern int ungetc (int __c, FILE *__stream);
  703.  
  704.  
  705. /* Read chunks of generic data from STREAM.
  706.  
  707.    This function is a possible cancellation point and therefore not
  708.    marked with __THROW.  */
  709. extern size_t fread (void *__restrict __ptr, size_t __size,
  710.              size_t __n, FILE *__restrict __stream) __wur;
  711. /* Write chunks of generic data to STREAM.
  712.  
  713.    This function is a possible cancellation point and therefore not
  714.    marked with __THROW.  */
  715. extern size_t fwrite (const void *__restrict __ptr, size_t __size,
  716.               size_t __n, FILE *__restrict __s);
  717. __END_NAMESPACE_STD
  718.  
  719. #ifdef __USE_GNU
  720. /* This function does the same as `fputs' but does not lock the stream.
  721.  
  722.    This function is not part of POSIX and therefore no official
  723.    cancellation point.  But due to similarity with an POSIX interface
  724.    or due to the implementation it is a cancellation point and
  725.    therefore not marked with __THROW.  */
  726. extern int fputs_unlocked (const char *__restrict __s,
  727.                FILE *__restrict __stream);
  728. #endif
  729.  
  730. #ifdef __USE_MISC
  731. /* Faster versions when locking is not necessary.
  732.  
  733.    These functions are not part of POSIX and therefore no official
  734.    cancellation point.  But due to similarity with an POSIX interface
  735.    or due to the implementation they are cancellation points and
  736.    therefore not marked with __THROW.  */
  737. extern size_t fread_unlocked (void *__restrict __ptr, size_t __size,
  738.                   size_t __n, FILE *__restrict __stream) __wur;
  739. extern size_t fwrite_unlocked (const void *__restrict __ptr, size_t __size,
  740.                    size_t __n, FILE *__restrict __stream);
  741. #endif
  742.  
  743.  
  744. __BEGIN_NAMESPACE_STD
  745. /* Seek to a certain position on STREAM.
  746.  
  747.    This function is a possible cancellation point and therefore not
  748.    marked with __THROW.  */
  749. extern int fseek (FILE *__stream, long int __off, int __whence);
  750. /* Return the current position of STREAM.
  751.  
  752.    This function is a possible cancellation point and therefore not
  753.    marked with __THROW.  */
  754. extern long int ftell (FILE *__stream) __wur;
  755. /* Rewind to the beginning of STREAM.
  756.  
  757.    This function is a possible cancellation point and therefore not
  758.    marked with __THROW.  */
  759. extern void rewind (FILE *__stream);
  760. __END_NAMESPACE_STD
  761.  
  762. /* The Single Unix Specification, Version 2, specifies an alternative,
  763.    more adequate interface for the two functions above which deal with
  764.    file offset.  `long int' is not the right type.  These definitions
  765.    are originally defined in the Large File Support API.  */
  766.  
  767. #if defined __USE_LARGEFILE || defined __USE_XOPEN2K
  768. # ifndef __USE_FILE_OFFSET64
  769. /* Seek to a certain position on STREAM.
  770.  
  771.    This function is a possible cancellation point and therefore not
  772.    marked with __THROW.  */
  773. extern int fseeko (FILE *__stream, __off_t __off, int __whence);
  774. /* Return the current position of STREAM.
  775.  
  776.    This function is a possible cancellation point and therefore not
  777.    marked with __THROW.  */
  778. extern __off_t ftello (FILE *__stream) __wur;
  779. # else
  780. #  ifdef __REDIRECT
  781. extern int __REDIRECT (fseeko,
  782.                (FILE *__stream, __off64_t __off, int __whence),
  783.                fseeko64);
  784. extern __off64_t __REDIRECT (ftello, (FILE *__stream), ftello64);
  785. #  else
  786. #   define fseeko fseeko64
  787. #   define ftello ftello64
  788. #  endif
  789. # endif
  790. #endif
  791.  
  792. __BEGIN_NAMESPACE_STD
  793. #ifndef __USE_FILE_OFFSET64
  794. /* Get STREAM's position.
  795.  
  796.    This function is a possible cancellation point and therefore not
  797.    marked with __THROW.  */
  798. extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos);
  799. /* Set STREAM's position.
  800.  
  801.    This function is a possible cancellation point and therefore not
  802.    marked with __THROW.  */
  803. extern int fsetpos (FILE *__stream, const fpos_t *__pos);
  804. #else
  805. # ifdef __REDIRECT
  806. extern int __REDIRECT (fgetpos, (FILE *__restrict __stream,
  807.                  fpos_t *__restrict __pos), fgetpos64);
  808. extern int __REDIRECT (fsetpos,
  809.                (FILE *__stream, const fpos_t *__pos), fsetpos64);
  810. # else
  811. #  define fgetpos fgetpos64
  812. #  define fsetpos fsetpos64
  813. # endif
  814. #endif
  815. __END_NAMESPACE_STD
  816.  
  817. #ifdef __USE_LARGEFILE64
  818. extern int fseeko64 (FILE *__stream, __off64_t __off, int __whence);
  819. extern __off64_t ftello64 (FILE *__stream) __wur;
  820. extern int fgetpos64 (FILE *__restrict __stream, fpos64_t *__restrict __pos);
  821. extern int fsetpos64 (FILE *__stream, const fpos64_t *__pos);
  822. #endif
  823.  
  824. __BEGIN_NAMESPACE_STD
  825. /* Clear the error and EOF indicators for STREAM.  */
  826. extern void clearerr (FILE *__stream) __THROW;
  827. /* Return the EOF indicator for STREAM.  */
  828. extern int feof (FILE *__stream) __THROW __wur;
  829. /* Return the error indicator for STREAM.  */
  830. extern int ferror (FILE *__stream) __THROW __wur;
  831. __END_NAMESPACE_STD
  832.  
  833. #ifdef __USE_MISC
  834. /* Faster versions when locking is not required.  */
  835. extern void clearerr_unlocked (FILE *__stream) __THROW;
  836. extern int feof_unlocked (FILE *__stream) __THROW __wur;
  837. extern int ferror_unlocked (FILE *__stream) __THROW __wur;
  838. #endif
  839.  
  840.  
  841. __BEGIN_NAMESPACE_STD
  842. /* Print a message describing the meaning of the value of errno.
  843.  
  844.    This function is a possible cancellation point and therefore not
  845.    marked with __THROW.  */
  846. extern void perror (const char *__s);
  847. __END_NAMESPACE_STD
  848.  
  849. /* Provide the declarations for `sys_errlist' and `sys_nerr' if they
  850.    are available on this system.  Even if available, these variables
  851.    should not be used directly.  The `strerror' function provides
  852.    all the necessary functionality.  */
  853. #include <bits/sys_errlist.h>
  854.  
  855.  
  856. #ifdef  __USE_POSIX
  857. /* Return the system file descriptor for STREAM.  */
  858. extern int fileno (FILE *__stream) __THROW __wur;
  859. #endif /* Use POSIX.  */
  860.  
  861. #ifdef __USE_MISC
  862. /* Faster version when locking is not required.  */
  863. extern int fileno_unlocked (FILE *__stream) __THROW __wur;
  864. #endif
  865.  
  866.  
  867. #if (defined __USE_POSIX2 || defined __USE_SVID  || defined __USE_BSD || \
  868.      defined __USE_MISC)
  869. /* Create a new stream connected to a pipe running the given command.
  870.  
  871.    This function is a possible cancellation point and therefore not
  872.    marked with __THROW.  */
  873. extern FILE *popen (const char *__command, const char *__modes) __wur;
  874.  
  875. /* Close a stream opened by popen and return the status of its child.
  876.  
  877.    This function is a possible cancellation point and therefore not
  878.    marked with __THROW.  */
  879. extern int pclose (FILE *__stream);
  880. #endif
  881.  
  882.  
  883. #ifdef  __USE_POSIX
  884. /* Return the name of the controlling terminal.  */
  885. extern char *ctermid (char *__s) __THROW;
  886. #endif /* Use POSIX.  */
  887.  
  888.  
  889. #ifdef __USE_XOPEN
  890. /* Return the name of the current user.  */
  891. extern char *cuserid (char *__s);
  892. #endif /* Use X/Open, but not issue 6.  */
  893.  
  894.  
  895. #ifdef  __USE_GNU
  896. struct obstack;         /* See <obstack.h>.  */
  897.  
  898. /* Write formatted output to an obstack.  */
  899. extern int obstack_printf (struct obstack *__restrict __obstack,
  900.                const char *__restrict __format, ...)
  901.      __THROWNL __attribute__ ((__format__ (__printf__, 2, 3)));
  902. extern int obstack_vprintf (struct obstack *__restrict __obstack,
  903.                 const char *__restrict __format,
  904.                 _G_va_list __args)
  905.      __THROWNL __attribute__ ((__format__ (__printf__, 2, 0)));
  906. #endif /* Use GNU.  */
  907.  
  908.  
  909. #if defined __USE_POSIX || defined __USE_MISC
  910. /* These are defined in POSIX.1:1996.  */
  911.  
  912. /* Acquire ownership of STREAM.  */
  913. extern void flockfile (FILE *__stream) __THROW;
  914.  
  915. /* Try to acquire ownership of STREAM but do not block if it is not
  916.    possible.  */
  917. extern int ftrylockfile (FILE *__stream) __THROW __wur;
  918.  
  919. /* Relinquish the ownership granted for STREAM.  */
  920. extern void funlockfile (FILE *__stream) __THROW;
  921. #endif /* POSIX || misc */
  922.  
  923. #if defined __USE_XOPEN && !defined __USE_XOPEN2K && !defined __USE_GNU
  924. /* The X/Open standard requires some functions and variables to be
  925.    declared here which do not belong into this header.  But we have to
  926.    follow.  In GNU mode we don't do this nonsense.  */
  927. # define __need_getopt
  928. # include <getopt.h>
  929. #endif  /* X/Open, but not issue 6 and not for GNU.  */
  930.  
  931. /* If we are compiling with optimizing read this file.  It contains
  932.    several optimizing inline functions and macros.  */
  933. #ifdef __USE_EXTERN_INLINES
  934. # include <bits/stdio.h>
  935. #endif
  936. #if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline
  937. # include <bits/stdio2.h>
  938. #endif
  939. #ifdef __LDBL_COMPAT
  940. # include <bits/stdio-ldbl.h>
  941. #endif
  942.  
  943. __END_DECLS
  944.  
  945. #endif /* <stdio.h> included.  */
  946.  
  947. #endif /* !_STDIO_H */
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