/* Optimizing macros and inline functions for stdio functions.

   Copyright (C) 1998-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _BITS_STDIO_H

#define _BITS_STDIO_H 1

#ifndef _STDIO_H

# error "Never include <bits/stdio.h> directly; use <stdio.h> instead."

#endif

#ifndef __extern_inline

# define __STDIO_INLINE inline

#else

# define __STDIO_INLINE __extern_inline

#endif

#ifdef __USE_EXTERN_INLINES

/* For -D_FORTIFY_SOURCE{,=2} bits/stdio2.h will define a different

   inline.  */

# if !(__USE_FORTIFY_LEVEL > 0 && defined __fortify_function)

/* Write formatted output to stdout from argument list ARG.  */

__STDIO_INLINE int

vprintf (const char *__restrict __fmt, __gnuc_va_list __arg)

{

  return vfprintf (stdout, __fmt, __arg);

}

# endif

/* Read a character from stdin.  */

__STDIO_INLINE int

getchar (void)

{

  return getc (stdin);

}

# ifdef __USE_MISC

/* Faster version when locking is not necessary.  */

__STDIO_INLINE int

fgetc_unlocked (FILE *__fp)

{

  return __getc_unlocked_body (__fp);

}

# endif /* misc */

# ifdef __USE_POSIX

/* This is defined in POSIX.1:1996.  */

__STDIO_INLINE int

getc_unlocked (FILE *__fp)

{

  return __getc_unlocked_body (__fp);

}

/* This is defined in POSIX.1:1996.  */

__STDIO_INLINE int

getchar_unlocked (void)

{

  return __getc_unlocked_body (stdin);

}

# endif	/* POSIX */

/* Write a character to stdout.  */

__STDIO_INLINE int

putchar (int __c)

{

  return putc (__c, stdout);

}

# ifdef __USE_MISC

/* Faster version when locking is not necessary.  */

__STDIO_INLINE int

fputc_unlocked (int __c, FILE *__stream)

{

  return __putc_unlocked_body (__c, __stream);

}

# endif /* misc */

# ifdef __USE_POSIX

/* This is defined in POSIX.1:1996.  */

__STDIO_INLINE int

putc_unlocked (int __c, FILE *__stream)

{

  return __putc_unlocked_body (__c, __stream);

}

/* This is defined in POSIX.1:1996.  */

__STDIO_INLINE int

putchar_unlocked (int __c)

{

  return __putc_unlocked_body (__c, stdout);

}

# endif	/* POSIX */

# ifdef	__USE_GNU

/* Like `getdelim', but reads up to a newline.  */

__STDIO_INLINE __ssize_t

getline (char **__lineptr, size_t *__n, FILE *__stream)

{

  return __getdelim (__lineptr, __n, '\n', __stream);

}

# endif /* GNU */

# ifdef __USE_MISC

/* Faster versions when locking is not required.  */

__STDIO_INLINE int

__NTH (feof_unlocked (FILE *__stream))

{

  return __feof_unlocked_body (__stream);

}

/* Faster versions when locking is not required.  */

__STDIO_INLINE int

__NTH (ferror_unlocked (FILE *__stream))

{

  return __ferror_unlocked_body (__stream);

}

# endif /* misc */

#endif /* Use extern inlines.  */

#if defined __USE_MISC && defined __GNUC__ && defined __OPTIMIZE__ \

    && !defined __cplusplus

/* Perform some simple optimizations.  */

# define fread_unlocked(ptr, size, n, stream) \

  (__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n)    \

		   && (size_t) (size) * (size_t) (n) <= 8		      \

		   && (size_t) (size) != 0)				      \

		  ? ({ char *__ptr = (char *) (ptr);			      \

		       FILE *__stream = (stream);			      \

		       size_t __cnt;					      \

		       for (__cnt = (size_t) (size) * (size_t) (n);	      \

			    __cnt > 0; --__cnt)				      \

			 {						      \

			   int __c = getc_unlocked (__stream);		      \

			   if (__c == EOF)				      \

			     break;					      \

			   *__ptr++ = __c;				      \

			 }						      \

		       ((size_t) (size) * (size_t) (n) - __cnt)		      \

			/ (size_t) (size); })				      \

		  : (((__builtin_constant_p (size) && (size_t) (size) == 0)   \

		      || (__builtin_constant_p (n) && (size_t) (n) == 0))     \

			/* Evaluate all parameters once.  */		      \

		     ? ((void) (ptr), (void) (stream), (void) (size),	      \

			(void) (n), (size_t) 0)				      \

		     : fread_unlocked (ptr, size, n, stream))))

# define fwrite_unlocked(ptr, size, n, stream) \

  (__extension__ ((__builtin_constant_p (size) && __builtin_constant_p (n)    \

		   && (size_t) (size) * (size_t) (n) <= 8		      \

		   && (size_t) (size) != 0)				      \

		  ? ({ const char *__ptr = (const char *) (ptr);	      \

		       FILE *__stream = (stream);			      \

		       size_t __cnt;					      \

		       for (__cnt = (size_t) (size) * (size_t) (n);	      \

			    __cnt > 0; --__cnt)				      \

			 if (putc_unlocked (*__ptr++, __stream) == EOF)	      \

			   break;					      \

		       ((size_t) (size) * (size_t) (n) - __cnt)		      \

			/ (size_t) (size); })				      \

		  : (((__builtin_constant_p (size) && (size_t) (size) == 0)   \

		      || (__builtin_constant_p (n) && (size_t) (n) == 0))     \

			/* Evaluate all parameters once.  */		      \

		     ? ((void) (ptr), (void) (stream), (void) (size),	      \

			(void) (n), (size_t) 0)				      \

		     : fwrite_unlocked (ptr, size, n, stream))))

#endif

/* Define helper macro.  */

#undef __STDIO_INLINE

#endif /* bits/stdio.h.  */