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-rw-r--r--libio/stdio.h740
1 files changed, 527 insertions, 213 deletions
diff --git a/libio/stdio.h b/libio/stdio.h
index 88e9c6a985..0ed711a8cb 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -1,209 +1,191 @@
-/* This is part of the iostream/stdio library, providing -*- C -*- I/O.
- Define ANSI C stdio on top of C++ iostreams.
+/* Define ISO C stdio on top of C++ iostreams.
Copyright (C) 1991, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Library General Public
-License as published by the Free Software Foundation; either
-version 2 of the License, or (at your option) any later version.
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+ The GNU C Library 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
+ Library General Public License for more details.
-This library 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
-Library General Public License for more details.
-
-You should have received a copy of the GNU Library General Public
-License along with this library; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-*/
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/*
* ISO C Standard: 4.9 INPUT/OUTPUT <stdio.h>
*/
#ifndef _STDIO_H
-#define _STDIO_H
+
+#if !defined __need_FILE
+#define _STDIO_H 1
+#include <features.h>
+
+__BEGIN_DECLS
+
+#define __need_size_t
+#define __need_NULL
+#include <stddef.h>
+
+#include <gnu/types.h>
+#endif /* Don't need FILE. */
+#undef __need_FILE
+
+
+#ifndef __FILE_defined
+
+/* The opaque type of streams. */
+typedef struct _IO_FILE FILE;
+
+#define __FILE_defined 1
+#endif /* FILE not defined. */
+
+
+#ifdef _STDIO_H
#define _STDIO_USES_IOSTREAM
#include <libio.h>
-#ifndef NULL
-#ifdef __cplusplus
-#define NULL 0
-#else
-#define NULL (void*)0
-#endif
-#endif
+/* The type of the second argument to `fgetpos' and `fsetpos'. */
+typedef _G_fpos_t fpos_t;
-#ifndef EOF
-#define EOF (-1)
-#endif
+
+/* Generate a unique file name (and possibly open it with mode "w+b"). */
+extern char *__stdio_gen_tempname __P ((char *__buf, size_t __bufsize,
+ __const char *__dir,
+ __const char *__pfx,
+ int __dir_search,
+ size_t *__lenptr,
+ FILE **__streamptr));
+
+
+/* Print out MESSAGE on the error output and abort. */
+extern void __libc_fatal __P ((__const char *__message))
+ __attribute__ ((__noreturn__));
+
+
+/* The possibilities for the third argument to `setvbuf'. */
+#define _IOFBF 0 /* Fully buffered. */
+#define _IOLBF 1 /* Line buffered. */
+#define _IONBF 2 /* No buffering. */
+
+
+/* Default buffer size. */
#ifndef BUFSIZ
#define BUFSIZ _IO_BUFSIZ
#endif
-#define _IOFBF 0 /* Fully buffered. */
-#define _IOLBF 1 /* Line buffered. */
-#define _IONBF 2 /* No buffering. */
-
-#define SEEK_SET 0
-#define SEEK_CUR 1
-#define SEEK_END 2
-
- /* define size_t. Crud in case <sys/types.h> has defined it. */
-#if !defined(_SIZE_T) && !defined(_T_SIZE_) && !defined(_T_SIZE)
-#if !defined(__SIZE_T) && !defined(_SIZE_T_) && !defined(___int_size_t_h)
-#if !defined(_GCC_SIZE_T) && !defined(_SIZET_)
-#define _SIZE_T
-#define _T_SIZE_
-#define _T_SIZE
-#define __SIZE_T
-#define _SIZE_T_
-#define ___int_size_t_h
-#define _GCC_SIZE_T
-#define _SIZET_
-typedef _IO_size_t size_t;
-#endif
-#endif
+
+/* End of file character.
+ Some things throughout the library rely on this being -1. */
+#ifndef EOF
+#define EOF (-1)
#endif
-typedef struct _IO_FILE FILE;
-typedef _IO_fpos_t fpos_t;
-#include <stdio_lim.h>
+/* The possibilities for the third argument to `fseek'.
+ These values should not be changed. */
+#define SEEK_SET 0 /* Seek from beginning of file. */
+#define SEEK_CUR 1 /* Seek from current position. */
+#define SEEK_END 2 /* Seek from end of file. */
+
#ifdef __USE_SVID
/* Default path prefix for `tempnam' and `tmpnam'. */
#define P_tmpdir "/tmp"
#endif
-/* For use by debuggers. These are linked in if printf or fprintf are used. */
-extern FILE *stdin, *stdout, *stderr; /* TODO */
+/* Get the values:
+ L_tmpnam How long an array of chars must be to be passed to `tmpnam'.
+ TMP_MAX The minimum number of unique filenames generated by tmpnam
+ (and tempnam when it uses tmpnam's name space),
+ or tempnam (the two are separate).
+ L_ctermid How long an array to pass to `ctermid'.
+ L_cuserid How long an array to pass to `cuserid'.
+ FOPEN_MAX Minimum number of files that can be open at once.
+ FILENAME_MAX Maximum length of a filename. */
+#include <stdio_lim.h>
+
+
+/* Standard streams. */
+extern FILE *stdin, *stdout, *stderr;
+/* Refer to the real names by default. */
#define stdin _IO_stdin
#define stdout _IO_stdout
#define stderr _IO_stderr
-#ifdef __cplusplus
-extern "C" {
-#endif
-#ifndef __P
-#if defined(__STDC__) || defined(__cplusplus) || defined(c_plusplus)
-#define __P(args) args
-#else
-#define __P(args) ()
-#endif
-#endif /*!__P*/
-
-extern void clearerr __P ((FILE*));
-extern int fclose __P ((FILE*));
-extern int feof __P ((FILE*));
-extern int ferror __P ((FILE*));
-extern int fflush __P ((FILE*));
-extern int fgetc __P ((FILE *));
-extern int fgetpos __P ((FILE* fp, fpos_t *pos));
-extern char* fgets __P ((char*, int, FILE*));
-extern FILE* fopen __P ((__const char*, __const char*));
-extern FILE* fopencookie __P ((void *cookie, __const char *mode,
- _IO_cookie_io_functions_t io_functions));
-extern int fprintf __P ((FILE*, __const char* format, ...));
-extern int fputc __P ((int, FILE*));
-extern int fputs __P ((__const char *str, FILE *fp));
-extern size_t fread __P ((void*, size_t, size_t, FILE*));
-extern FILE* freopen __P ((__const char*, __const char*, FILE*));
-extern int fscanf __P ((FILE *fp, __const char* format, ...));
-extern int fseek __P ((FILE* fp, long int offset, int whence));
-extern int fsetpos __P ((FILE* fp, __const fpos_t *pos));
-extern long int ftell __P ((FILE* fp));
-extern size_t fwrite __P ((__const void*, size_t, size_t, FILE*));
-extern int getc __P ((FILE *));
-extern int getchar __P ((void));
-extern char* gets __P ((char*));
-extern void perror __P ((__const char *));
-extern int printf __P ((__const char* format, ...));
-extern int putc __P ((int, FILE *));
-extern int putchar __P ((int));
-extern int puts __P ((__const char *str));
-extern int remove __P ((__const char*));
-extern int rename __P ((__const char* _old, __const char* _new));
-extern void rewind __P ((FILE*));
-extern int scanf __P ((__const char* format, ...));
-extern void setbuf __P ((FILE*, char*));
-extern void setlinebuf __P ((FILE*));
-extern void setbuffer __P ((FILE*, char*, int));
-extern int setvbuf __P ((FILE*, char*, int mode, size_t size));
-extern int sprintf __P ((char*, __const char* format, ...));
-extern int sscanf __P ((__const char* string, __const char* format, ...));
-extern FILE* tmpfile __P ((void));
-extern char* tmpnam __P ((char*));
-#ifdef __USE_MISC
-extern char* tmpnam_r __P ((char*));
+/* Remove file FILENAME. */
+extern int remove __P ((__const char *__filename));
+/* Rename file OLD to NEW. */
+extern int rename __P ((__const char *__old, __const char *__new));
+
+
+/* Create a temporary file and open it read/write. */
+extern FILE *tmpfile __P ((void));
+/* Generate a temporary filename. */
+extern char *tmpnam __P ((char *__s));
+
+#ifdef __USE_MISC
+/* This is the reentrant variant of `tmpnam'. The only difference is
+ that it does not allow S to be NULL. */
+extern char *tmpnam_r __P ((char *__s));
#endif
-#if defined(__USE_SVID) || defined(__USE_XOPEN)
+
+
+#if defined __USE_SVID || defined __USE_XOPEN
+/* Generate a unique temporary filename using up to five characters of PFX
+ if it is not NULL. The directory to put this file in is searched for
+ as follows: First the environment variable "TMPDIR" is checked.
+ If it contains the name of a writable directory, that directory is used.
+ If not and if DIR is not NULL, that value is checked. If that fails,
+ P_tmpdir is tried and finally "/tmp". The storage for the filename
+ is allocated by `malloc'. */
extern char *tempnam __P ((__const char *__dir, __const char *__pfx));
#endif
-extern char *__stdio_gen_tempname __P ((char *__buf, size_t bufsize,
- __const char *dir, __const char *pfx,
- int dir_search, size_t *lenptr,
- FILE **streamptr));
-extern int ungetc __P ((int c, FILE* fp));
-extern int vfprintf __P ((FILE *fp, char __const *fmt0, _G_va_list));
-extern int vprintf __P ((char __const *fmt, _G_va_list));
-extern int vsprintf __P ((char* string, __const char* format, _G_va_list));
-extern void __libc_fatal __P ((__const char *__message))
- __attribute__ ((__noreturn__));
-#ifndef __STRICT_ANSI__
-extern int dprintf __P ((int, __const char *, ...));
-extern int vdprintf __P ((int, __const char *, _G_va_list));
-extern int vfscanf __P ((FILE*, __const char *, _G_va_list));
-extern int __vfscanf __P ((FILE*, __const char *, _G_va_list));
-extern int vscanf __P ((__const char *, _G_va_list));
-extern int vsscanf __P ((__const char *, __const char *, _G_va_list));
-extern int __vsscanf __P ((__const char *, __const char *, _G_va_list));
+
+/* Close STREAM. */
+extern int fclose __P ((FILE *__stream));
+/* Flush STREAM, or all streams if STREAM is NULL. */
+extern int fflush __P ((FILE *__stream));
+
+#ifdef __USE_MISC
+/* Faster versions when locking is not required. */
+extern int fclose_unlocked __P ((FILE *__stream));
+extern int fflush_unlocked __P ((FILE *__stream));
#endif
#ifdef __USE_GNU
+/* Close all streams. */
extern int __fcloseall __P ((void));
extern int fcloseall __P ((void));
-
-struct obstack;
-extern int obstack_vprintf __P ((struct obstack *__obstack,
- __const char *__fmt, _G_va_list));
-extern int obstack_printf __P ((struct obstack *__obstack, __const char *__fmt,
- ...));
#endif
-#if !defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)
-extern FILE *fdopen __P ((int, __const char *));
-extern int fileno __P ((FILE*));
-extern FILE* popen __P ((__const char*, __const char*));
-extern int pclose __P ((FILE*));
-
-#define L_ctermid 9
-#define L_cuserid 9
-/* Return the name of the controlling terminal. */
-extern char *ctermid __P ((char *__buf));
+/* Open a file and create a new stream for it. */
+extern FILE *fopen __P ((__const char *__filename, __const char *__modes));
+/* Open a file, replacing an existing stream with it. */
+extern FILE *freopen __P ((__const char *__restrict __filename,
+ __const char *__restrict __modes,
+ FILE *__restrict __stream));
-/* Get character login name of the user. */
-extern char *cuserid __P ((char * __buf));
+#ifdef __USE_POSIX
+/* Create a new stream that refers to an existing system file descriptor. */
+extern FILE *fdopen __P ((int __fd, __const char *__modes));
#endif
-#ifdef __USE_GNU
-extern _IO_ssize_t getdelim __P ((char **, size_t *, int, FILE*));
-extern _IO_ssize_t getline __P ((char **, size_t *, FILE *));
-extern _IO_ssize_t __getline __P ((char **, size_t *, FILE *));
-
-extern int snprintf __P ((char *, size_t, __const char *, ...));
-extern int __snprintf __P ((char *, size_t, __const char *, ...));
-extern int vsnprintf __P ((char *, size_t, __const char *, _G_va_list));
-extern int __vsnprintf __P ((char *, size_t, __const char *, _G_va_list));
-
-extern int asprintf __P ((char **, const char *, ...));
-extern int vasprintf __P ((char **, const char *, _G_va_list));
+#ifdef __USE_GNU
+/* Create a new stream that refers to the given magic cookie,
+ and uses the given functions for input and output. */
+extern FILE *fopencookie __P ((void *__magic_cookie, __const char *__modes,
+ _IO_cookie_io_functions_t __io_funcs));
/* Open a stream that writes into a malloc'd buffer that is expanded as
necessary. *BUFLOC and *SIZELOC are updated with the buffer's location
@@ -211,77 +193,409 @@ extern int vasprintf __P ((char **, const char *, _G_va_list));
extern FILE *open_memstream __P ((char **__bufloc, size_t *__sizeloc));
#endif
-extern int __underflow __P ((struct _IO_FILE*));
-extern int __overflow __P ((struct _IO_FILE*, int));
-#ifdef __USE_BSD
-extern int sys_nerr;
-extern const char *const sys_errlist[];
-#endif
-#ifdef __USE_GNU
-extern int _sys_nerr;
-extern const char *const _sys_errlist[];
+/* If BUF is NULL, make STREAM unbuffered.
+ Else make it use buffer BUF, of size BUFSIZ. */
+extern void setbuf __P ((FILE *__restrict __stream, char *__restrict __buf));
+/* Make STREAM use buffering mode MODE.
+ If BUF is not NULL, use N bytes of it for buffering;
+ else allocate an internal buffer N bytes long. */
+extern int setvbuf __P ((FILE *__restrict __stream, char *__restrict __buf,
+ int __modes, size_t __n));
+
+#ifdef __USE_BSD
+/* If BUF is NULL, make STREAM unbuffered.
+ Else make it use SIZE bytes of BUF for buffering. */
+extern void setbuffer __P ((FILE *__stream, char *__buf, size_t __size));
+
+/* Make STREAM line-buffered. */
+extern void setlinebuf __P ((FILE *__stream));
#endif
-/* Handle locking of streams. */
-#ifdef __USE_MISC
-extern void clearerr_locked __P ((FILE *));
-extern void clearerr_unlocked __P ((FILE *));
-extern int feof_locked __P ((FILE *));
-extern int feof_unlocked __P ((FILE *));
-extern int ferror_locked __P ((FILE*));
-extern int ferror_unlocked __P ((FILE*));
-extern int fileno_locked __P ((FILE *));
-extern int fileno_unlocked __P ((FILE *));
-extern int fclose_unlocked __P ((FILE *));
-extern int fflush_locked __P ((FILE *));
-extern int fflush_unlocked __P ((FILE *));
-extern size_t fread_unlocked __P ((void *, size_t, size_t, FILE *));
-extern size_t fwrite_unlocked __P ((const void *, size_t, size_t, FILE *));
-
-extern int fputc_locked __P ((int, FILE*));
-extern int fputc_unlocked __P ((int, FILE*));
-extern int getc_locked __P ((FILE *));
-extern int getchar_locked __P ((void));
-extern int putc_locked __P ((int, FILE *));
-extern int putchar_locked __P ((int));
-
-# ifndef _LIBC
-# define getc_locked(fp) _IO_getc (fp)
-# define getchar_locked() _IO_getc (stdin)
-# define putchar_locked(c) _IO_putc (c, stdout)
-# endif
+
+/* Write formatted output to STREAM. */
+extern int fprintf __P ((FILE *__restrict __stream,
+ __const char *__restrict __format, ...));
+/* Write formatted output to stdout. */
+extern int printf __P ((__const char *__restrict __format, ...));
+/* Write formatted output to S. */
+extern int sprintf __P ((char *__restrict __s,
+ __const char *__restrict __format, ...));
+
+/* Write formatted output to S from argument list ARG. */
+extern int vfprintf __P ((FILE *__restrict __s,
+ __const char *__restrict __format,
+ _G_va_list __arg));
+/* Write formatted output to stdout from argument list ARG. */
+extern int vprintf __P ((__const char *__restrict __format,
+ _G_va_list __arg));
+/* Write formatted output to S from argument list ARG. */
+extern int vsprintf __P ((char *__restrict __s,
+ __const char *__restrict __format,
+ _G_va_list __arg));
+
+#ifdef __OPTIMIZE__
+extern __inline int
+vprintf (const char *__restrict __fmt, _G_va_list __arg)
+{
+ return vfprintf (stdout, __fmt, __arg);
+}
+#endif /* Optimizing. */
+
+#ifdef __USE_GNU
+/* Maximum chars of output to write in MAXLEN. */
+extern int __snprintf __P ((char *__s, size_t __maxlen,
+ __const char *__format, ...));
+extern int snprintf __P ((char *__s, size_t __maxlen,
+ __const char *__format, ...));
+
+extern int __vsnprintf __P ((char *__s, size_t __maxlen,
+ __const char *__format, _G_va_list __arg));
+extern int vsnprintf __P ((char *__s, size_t __maxlen,
+ __const char *__format, _G_va_list __arg));
+
+/* Write formatted output to a string dynamically allocated with `malloc'.
+ Store the address of the string in *PTR. */
+extern int vasprintf __P ((char **__ptr, __const char *__f,
+ _G_va_list __arg));
+extern int asprintf __P ((char **__ptr, __const char *__fmt, ...));
+
+/* Write formatted output to a file descriptor. */
+extern int vdprintf __P ((int __fd, __const char *__fmt, _G_va_list __arg));
+extern int dprintf __P ((int __fd, __const char *__fmt, ...));
#endif
+
+/* Read formatted input from STREAM. */
+extern int fscanf __P ((FILE *__restrict __stream,
+ __const char *__restrict __format, ...));
+/* Read formatted input from stdin. */
+extern int scanf __P ((__const char *__restrict __format, ...));
+/* Read formatted input from S. */
+extern int sscanf __P ((__const char *__restrict __s,
+ __const char *__restrict __format, ...));
+
+#ifdef __USE_GNU
+/* Read formatted input from S into argument list ARG. */
+extern int __vfscanf __P ((FILE *__s, __const char *__format,
+ _G_va_list __arg));
+extern int vfscanf __P ((FILE *__s, __const char *__format,
+ _G_va_list __arg));
+
+/* Read formatted input from stdin into argument list ARG. */
+extern int __vscanf __P ((__const char *__format, _G_va_list __arg));
+extern int vscanf __P ((__const char *__format, _G_va_list __arg));
+
+/* Read formatted input from S into argument list ARG. */
+extern int __vsscanf __P ((__const char *__s, __const char *__format,
+ _G_va_list __arg));
+extern int vsscanf __P ((__const char *__s, __const char *__format,
+ _G_va_list __arg));
+
+
+#ifdef __OPTIMIZE__
+extern __inline int
+vfscanf (FILE *__s, const char *__fmt, _G_va_list __arg)
+{
+ return __vfscanf (__s, __fmt, __arg);
+}
+extern __inline int
+vscanf (const char *__fmt, _G_va_list __arg)
+{
+ return __vfscanf (stdin, __fmt, __arg);
+}
+extern __inline int
+vsscanf (const char *__s, const char *__fmt, _G_va_list __arg)
+{
+ return __vsscanf (__s, __fmt, __arg);
+}
+#endif /* Optimizing. */
+#endif /* Use GNU. */
+
+
+/* Read a character from STREAM. */
+extern int fgetc __P ((FILE *__stream));
+extern int getc __P ((FILE *__stream));
+
+/* Read a character from stdin. */
+extern int getchar __P ((void));
+
+/* The C standard explicitly says this is a macro, so we always do the
+ optimization for it. */
+#define getc(_fp) _IO_getc (_fp)
+
+#ifdef __OPTIMIZE__
+extern __inline int
+getchar (void)
+{
+ return _IO_getc (stdin);
+}
+#endif /* Optimizing. */
+
#if defined __USE_POSIX || defined __USE_MISC
/* These are defined in POSIX.1:1996. */
-extern void flockfile __P ((FILE *));
-extern void funlockfile __P ((FILE *));
-extern int ftrylockfile __P ((FILE *));
-
-extern int getc_unlocked __P ((FILE *));
+extern int getc_unlocked __P ((FILE *__stream));
extern int getchar_unlocked __P ((void));
-extern int putc_unlocked __P ((int, FILE *));
-extern int putchar_unlocked __P ((int));
-
-# ifndef _LIBC
-# define getc_unlocked(fp) _IO_getc_unlocked (fp)
-# define getchar_unlocked() _IO_getc_unlocked (stdin)
-# define putc_unlocked(c, fp) _IO_putc_unlocked ((c), (fp))
-# define putchar_unlocked(c) _IO_putc_unlocked ((c), stdout)
-# endif
-#endif /* POSIX || misc */
-#define getc(_fp) _IO_getc (_fp)
+#ifdef __OPTIMIZE__
+extern __inline int
+getc_unlocked (FILE *__fp)
+{
+ return _IO_getc_unlocked (__fp);
+}
+
+extern __inline int
+getchar_unlocked (void)
+{
+ return _IO_getc_unlocked (stdin);
+}
+#endif /* Optimizing. */
+#endif /* Use POSIX or MISC. */
+
+
+/* Write a character to STREAM. */
+extern int fputc __P ((int __c, FILE *__stream));
+extern int putc __P ((int __c, FILE *__stream));
+
+/* Write a character to stdout. */
+extern int putchar __P ((int __c));
+
+/* The C standard explicitly says this can be a macro,
+ so we always do the optimization for it. */
#define putc(_ch, _fp) _IO_putc (_ch, _fp)
-#define putchar(_ch) _IO_putc (_ch, stdout)
-#define getchar() _IO_getc (stdin)
+#ifdef __OPTIMIZE__
+extern __inline int
+putchar (int __c)
+{
+ return _IO_putc (__c, stdout);
+}
+#endif
-#ifdef __cplusplus
+#ifdef __USE_MISC
+/* Faster version when locking is not necessary. */
+extern int fputc_unlocked __P ((int __c, FILE *__stream));
+
+#ifdef __OPTIMIZE__
+extern __inline int
+fputc_unlocked (int __c, FILE *__stream)
+{
+ return _IO_putc_unlocked (__c, __stream);
}
+#endif /* Optimizing. */
+#endif /* Use MISC. */
+
+#if defined __USE_POSIX || defined __USE_MISC
+/* These are defined in POSIX.1:1996. */
+extern int putc_unlocked __P ((int __c, FILE *__stream));
+extern int putchar_unlocked __P ((int __c));
+
+#ifdef __OPTIMIZE__
+extern __inline int
+putc_unlocked (int __c, FILE *__stream)
+{
+ return _IO_putc_unlocked (__c, __stream);
+}
+
+extern __inline int
+putchar_unlocked (int __c)
+{
+ return _IO_putc_unlocked (__c, stdout);
+}
+#endif /* Optimizing. */
+#endif /* Use POSIX or MISc. */
+
+
+#if defined __USE_SVID || defined __USE_MISC
+/* Get a word (int) from STREAM. */
+extern int getw __P ((FILE *__stream));
+
+/* Write a word (int) to STREAM. */
+extern int putw __P ((int __w, FILE *__stream));
#endif
+/* Get a newline-terminated string of finite length from STREAM. */
+extern char *fgets __P ((char *__restrict __s, int __n,
+ FILE *__restrict __stream));
+
+/* Get a newline-terminated string from stdin, removing the newline.
+ DO NOT USE THIS FUNCTION!! There is no limit on how much it will read. */
+extern char *gets __P ((char *__s));
+
+
+#ifdef __USE_GNU
+/* Read up to (and including) a DELIMITER from STREAM into *LINEPTR
+ (and null-terminate it). *LINEPTR is a pointer returned from malloc (or
+ NULL), pointing to *N characters of space. It is realloc'd as
+ necessary. Returns the number of characters read (not including the
+ null terminator), or -1 on error or EOF. */
+_IO_ssize_t __getdelim __P ((char **__lineptr, size_t *__n,
+ int __delimiter, FILE *__stream));
+_IO_ssize_t getdelim __P ((char **__lineptr, size_t *__n,
+ int __delimiter, FILE *__stream));
+
+/* Like `getdelim', but reads up to a newline. */
+_IO_ssize_t __getline __P ((char **__lineptr, size_t *__n, FILE *__stream));
+_IO_ssize_t getline __P ((char **__lineptr, size_t *__n, FILE *__stream));
+
+#ifdef __OPTIMIZE__
+extern __inline _IO_ssize_t
+getline (char **__lineptr, size_t *__n, FILE *__stream)
+{
+ return __getdelim (__lineptr, __n, '\n', __stream);
+}
+#endif /* Optimizing. */
+#endif
+
+
+/* Write a string to STREAM. */
+extern int fputs __P ((__const char *__restrict __s,
+ FILE *__restrict __stream));
+/* Write a string, followed by a newline, to stdout. */
+extern int puts __P ((__const char *__s));
+
+
+/* Push a character back onto the input buffer of STREAM. */
+extern int ungetc __P ((int __c, FILE *__stream));
+
+
+/* Read chunks of generic data from STREAM. */
+extern size_t fread __P ((void *__restrict __ptr, size_t __size,
+ size_t __n, FILE *__restrict __stream));
+/* Write chunks of generic data to STREAM. */
+extern size_t fwrite __P ((__const void *__restrict __ptr, size_t __size,
+ size_t __n, FILE *__restrict __s));
+
+#ifdef __USE_MISC
+/* Faster versions when locking is not necessary. */
+extern size_t fread_unlocked __P ((void *__restrict __ptr, size_t __size,
+ size_t __n, FILE *__restrict __stream));
+extern size_t fwrite_unlocked __P ((__const void *__restrict __ptr,
+ size_t __size, size_t __n,
+ FILE *__restrict __stream));
+#endif
+
+
+/* Seek to a certain position on STREAM. */
+extern int fseek __P ((FILE *__stream, long int __off, int __whence));
+/* Return the current position of STREAM. */
+extern long int ftell __P ((FILE *__stream));
+/* Rewind to the beginning of STREAM. */
+extern void rewind __P ((FILE *__stream));
+
+/* Get STREAM's position. */
+extern int fgetpos __P ((FILE *__restrict __stream,
+ fpos_t *__restrict __pos));
+/* Set STREAM's position. */
+extern int fsetpos __P ((FILE *__stream, __const fpos_t *__pos));
+
+
+/* Clear the error and EOF indicators for STREAM. */
+extern void clearerr __P ((FILE *__stream));
+/* Return the EOF indicator for STREAM. */
+extern int feof __P ((FILE *__stream));
+/* Return the error indicator for STREAM. */
+extern int ferror __P ((FILE *__stream));
+
+#ifdef __USE_MISC
+/* Faster versions when locking is not required. */
+extern void clearerr_unlocked __P ((FILE *__stream));
+extern int feof_unlocked __P ((FILE *__stream));
+extern int ferror_unlocked __P ((FILE *__stream));
+
+#ifdef __OPTIMIZE__
+extern __inline int
+feof_unlocked (FILE *__stream)
+{
+ return _IO_feof_unlocked (__stream);
+}
+
+extern __inline int
+ferror_unlocked (FILE *__stream)
+{
+ return _IO_ferror_unlocked (__stream);
+}
+#endif /* Optimizing. */
+#endif
+
+
+/* Print a message describing the meaning of the value of errno. */
+extern void perror __P ((__const char *__s));
+
+/* These variables normally should not be used directly. The `strftime'
+ function provides all the needed functionality. */
+#ifdef __USE_BSD
+extern int sys_nerr;
+extern __const char *__const sys_errlist[];
+#endif
+#ifdef __USE_GNU
+extern int _sys_nerr;
+extern __const char *__const _sys_errlist[];
+#endif
+
+
+#ifdef __USE_POSIX
+/* Return the system file descriptor for STREAM. */
+extern int fileno __P ((FILE *__stream));
+#endif /* Use POSIX. */
+
+#ifdef __USE_MISC
+/* Faster version when locking is not required. */
+extern int fileno_unlocked __P ((FILE *__stream));
+#endif
+
+
+#if (defined __USE_POSIX2 || defined __USE_SVID || defined __USE_BSD || \
+ defined __USE_MISC)
+/* Create a new stream connected to a pipe running the given command. */
+extern FILE *popen __P ((__const char *__command, __const char *__modes));
+
+/* Close a stream opened by popen and return the status of its child. */
+extern int pclose __P ((FILE *__stream));
+#endif
+
+
+#ifdef __USE_POSIX
+/* Return the name of the controlling terminal. */
+extern char *ctermid __P ((char *__s));
+#endif /* Use POSIX. */
+
+
+#ifdef __USE_XOPEN
+/* Return the name of the current user. */
+extern char *cuserid __P ((char *__s));
+#endif /* Use X/Open. */
+
+
+#ifdef __USE_GNU
+struct obstack; /* See <obstack.h>. */
+
+/* Write formatted output to an obstack. */
+extern int obstack_printf __P ((struct obstack *__obstack,
+ __const char *__format, ...));
+extern int obstack_vprintf __P ((struct obstack *__obstack,
+ __const char *__format,
+ _G_va_list __args));
+#endif /* Use GNU. */
+
+
+#if defined __USE_POSIX || defined __USE_MISC
+/* These are defined in POSIX.1:1996. */
+
+/* Acquire ownership of STREAM. */
+extern void flockfile __P ((FILE *__stream));
+
+/* Try to acquire ownership of STREAM but do not block if it is not
+ possible. */
+extern int ftrylockfile __P ((FILE *__stream));
+
+/* Relinquish the ownership granted for STREAM. */
+extern void funlockfile __P ((FILE *__stream));
+#endif /* POSIX || misc */
+
+__END_DECLS
+
+#endif /* <stdio.h> included. */
#endif /* !_STDIO_H */
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