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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio/] [clearerr.c] - Blame information for rev 207

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1 207 jeremybenn
/*
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 * Copyright (c) 1990 The Regents of the University of California.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms are permitted
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 * provided that the above copyright notice and this paragraph are
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 * duplicated in all such forms and that any documentation,
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 * advertising materials, and other materials related to such
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 * distribution and use acknowledge that the software was developed
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 * by the University of California, Berkeley.  The name of the
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 * University may not be used to endorse or promote products derived
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 * from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 */
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/*
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FUNCTION
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<<clearerr>>---clear file or stream error indicator
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INDEX
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        clearerr
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ANSI_SYNOPSIS
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        #include <stdio.h>
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        void clearerr(FILE *<[fp]>);
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TRAD_SYNOPSIS
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        #include <stdio.h>
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        void clearerr(<[fp]>)
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        FILE *<[fp]>;
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DESCRIPTION
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The <<stdio>> functions maintain an error indicator with each file
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pointer <[fp]>, to record whether any read or write errors have
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occurred on the associated file or stream.  Similarly, it maintains an
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end-of-file indicator to record whether there is no more data in the
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file.
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Use <<clearerr>> to reset both of these indicators.
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See <<ferror>> and <<feof>> to query the two indicators.
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RETURNS
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<<clearerr>> does not return a result.
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PORTABILITY
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ANSI C requires <<clearerr>>.
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No supporting OS subroutines are required.
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*/
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#include <_ansi.h>
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#include <stdio.h>
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#include "local.h"
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/* A subroutine version of the macro clearerr.  */
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#undef  clearerr
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_VOID
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_DEFUN(clearerr, (fp),
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       FILE * fp)
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{
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  CHECK_INIT(_REENT, fp);
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  _flockfile (fp);
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  __sclearerr (fp);
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  _funlockfile (fp);
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}

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