WebSVN – Kolibri OS – Diff – /contrib/sdk/sources/newlib/libc/stdio/clearerr.c


/*
 * 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
<>---clear file or stream error indicator
 
INDEX
	clearerr
 
ANSI_SYNOPSIS
	#include 
	void clearerr(FILE *<[fp]>);
 
TRAD_SYNOPSIS
	#include 
	void clearerr(<[fp]>)
	FILE *<[fp]>;
 
DESCRIPTION
The <> functions maintain an error indicator with each file
pointer <[fp]>, to record whether any read or write errors have
occurred on the associated file or stream.  Similarly, it maintains an
end-of-file indicator to record whether there is no more data in the
file.
 
Use <> to reset both of these indicators.
 
See <> and <> to query the two indicators.
 
 
RETURNS
<> does not return a result.
 
PORTABILITY
ANSI C requires <>.
 
No supporting OS subroutines are required.
*/
 
#include <_ansi.h>
#include 
#include "local.h"
 
/* A subroutine version of the macro clearerr.  */
 
#undef	clearerr
 
_VOID
_DEFUN(clearerr, (fp),
       FILE * fp)
{
  CHECK_INIT(_REENT, fp);
  _newlib_flockfile_start (fp);
  __sclearerr (fp);
  _newlib_flockfile_end (fp);
}

Rev 4874	Rev 4921
1	/*	1	/*
2	* Copyright (c) 1990 The Regents of the University of California.	2	* Copyright (c) 1990 The Regents of the University of California.
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms are permitted	5	* Redistribution and use in source and binary forms are permitted
6	* provided that the above copyright notice and this paragraph are	6	* provided that the above copyright notice and this paragraph are
7	* duplicated in all such forms and that any documentation,	7	* duplicated in all such forms and that any documentation,
8	* advertising materials, and other materials related to such	8	* advertising materials, and other materials related to such
9	* distribution and use acknowledge that the software was developed	9	* distribution and use acknowledge that the software was developed
10	* by the University of California, Berkeley. The name of the	10	* by the University of California, Berkeley. The name of the
11	* University may not be used to endorse or promote products derived	11	* University may not be used to endorse or promote products derived
12	* from this software without specific prior written permission.	12	* from this software without specific prior written permission.
13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.	15	* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16	*/	16	*/
17		17
18	/*	18	/*
19	FUNCTION	19	FUNCTION
20	<>---clear file or stream error indicator	20	<>---clear file or stream error indicator
21		21
22	INDEX	22	INDEX
23	clearerr	23	clearerr
24		24
25	ANSI_SYNOPSIS	25	ANSI_SYNOPSIS
26	#include	26	#include
27	void clearerr(FILE *<[fp]>);	27	void clearerr(FILE *<[fp]>);
28		28
29	TRAD_SYNOPSIS	29	TRAD_SYNOPSIS
30	#include	30	#include
31	void clearerr(<[fp]>)	31	void clearerr(<[fp]>)
32	FILE *<[fp]>;	32	FILE *<[fp]>;
33		33
34	DESCRIPTION	34	DESCRIPTION
35	The <> functions maintain an error indicator with each file	35	The <> functions maintain an error indicator with each file
36	pointer <[fp]>, to record whether any read or write errors have	36	pointer <[fp]>, to record whether any read or write errors have
37	occurred on the associated file or stream. Similarly, it maintains an	37	occurred on the associated file or stream. Similarly, it maintains an
38	end-of-file indicator to record whether there is no more data in the	38	end-of-file indicator to record whether there is no more data in the
39	file.	39	file.
40		40
41	Use <> to reset both of these indicators.	41	Use <> to reset both of these indicators.
42		42
43	See <> and <> to query the two indicators.	43	See <> and <> to query the two indicators.
44		44
45		45
46	RETURNS	46	RETURNS
47	<> does not return a result.	47	<> does not return a result.
48		48
49	PORTABILITY	49	PORTABILITY
50	ANSI C requires <>.	50	ANSI C requires <>.
51		51
52	No supporting OS subroutines are required.	52	No supporting OS subroutines are required.
53	*/	53	*/
54		54
55	#include <_ansi.h>	55	#include <_ansi.h>
56	#include	56	#include
57	#include "local.h"	57	#include "local.h"
58		58
59	/* A subroutine version of the macro clearerr. */	59	/* A subroutine version of the macro clearerr. */
60		60
61	#undef clearerr	61	#undef clearerr
62		62
63	_VOID	63	_VOID
64	_DEFUN(clearerr, (fp),	64	_DEFUN(clearerr, (fp),
65	FILE * fp)	65	FILE * fp)
66	{	66	{
67	CHECK_INIT(_REENT, fp);	67	CHECK_INIT(_REENT, fp);
68	_flockfile (fp);	68	_newlib_flockfile_start (fp);
69	__sclearerr (fp);	69	__sclearerr (fp);
70	_funlockfile (fp);	70	_newlib_flockfile_end (fp);
71	}	71	}

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(root)/contrib/sdk/sources/newlib/libc/stdio/clearerr.c – Rev 4874 → 4921