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/*

 * Copyright (c) 1990 The Regents of the University of California.

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms are permitted

 * provided that the above copyright notice and this paragraph are

 * duplicated in all such forms and that any documentation,

 * advertising materials, and other materials related to such

 * distribution and use acknowledge that the software was developed

 * by the University of California, Berkeley.  The name of the

 * University may not be used to endorse or promote products derived

 * from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

/*

FUNCTION

<>, <>---get a character from a file or stream

INDEX

	fgetc

INDEX

	fgetc_unlocked

INDEX

	_fgetc_r

INDEX

	_fgetc_unlocked_r

ANSI_SYNOPSIS

	#include 

	int fgetc(FILE *<[fp]>);

	#define _BSD_SOURCE

	#include 

	int fgetc_unlocked(FILE *<[fp]>);

	#include 

	int _fgetc_r(struct _reent *<[ptr]>, FILE *<[fp]>);

	#define _BSD_SOURCE

	#include 

	int _fgetc_unlocked_r(struct _reent *<[ptr]>, FILE *<[fp]>);

TRAD_SYNOPSIS

	#include 

	int fgetc(<[fp]>)

	FILE *<[fp]>;

	#define _BSD_SOURCE

	#include 

	int fgetc_unlocked(<[fp]>)

	FILE *<[fp]>;

	#include 

	int _fgetc_r(<[ptr]>, <[fp]>)

	struct _reent *<[ptr]>;

	FILE *<[fp]>;

	#define _BSD_SOURCE

	#include 

	int _fgetc_unlocked_r(<[ptr]>, <[fp]>)

	struct _reent *<[ptr]>;

	FILE *<[fp]>;

DESCRIPTION

Use <> to get the next single character from the file or stream

identified by <[fp]>.  As a side effect, <> advances the file's

current position indicator.

For a macro version of this function, see <>.

<> is a non-thread-safe version of <>.

<> may only safely be used within a scope

protected by flockfile() (or ftrylockfile()) and funlockfile().  This

function may safely be used in a multi-threaded program if and only

if they are called while the invoking thread owns the (FILE *)

object, as is the case after a successful call to the flockfile() or

ftrylockfile() functions.  If threads are disabled, then

<> is equivalent to <>.

The functions <<_fgetc_r>> and <<_fgetc_unlocked_r>> are simply reentrant

versions that are passed the additional reentrant structure pointer

argument: <[ptr]>.

RETURNS

The next character (read as an <>, and cast to

<>), unless there is no more data, or the host system reports a

read error; in either of these situations, <> returns <>.

You can distinguish the two situations that cause an <> result by

using the <> and <> functions.

PORTABILITY

ANSI C requires <>.

<> is a BSD extension also provided by GNU libc.

Supporting OS subroutines required: <>, <>, <>,

<>, <>, <>, <>.

*/

#include <_ansi.h>

#include 

#include "local.h"

int

_DEFUN(_fgetc_r, (ptr, fp),

       struct _reent * ptr _AND

       FILE * fp)

{

  int result;

  CHECK_INIT(ptr, fp);

  _newlib_flockfile_start (fp);

  result = __sgetc_r (ptr, fp);

  _newlib_flockfile_end (fp);

  return result;

}

#ifndef _REENT_ONLY

int

_DEFUN(fgetc, (fp),

       FILE * fp)

{

#if !defined(PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__)

  int result;

  struct _reent *reent = _REENT;

  CHECK_INIT(reent, fp);

  _newlib_flockfile_start (fp);

  result = __sgetc_r (reent, fp);

  _newlib_flockfile_end (fp);

  return result;

#else

  return _fgetc_r (_REENT, fp);

#endif

}

#endif /* !_REENT_ONLY */