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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio/] [getwchar.c] - Blame information for rev 258

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1 207 jeremybenn
/*-
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 * Copyright (c) 2002 Tim J. Robbins.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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/*
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FUNCTION
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<<getwchar>>---read a wide character from standard input
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INDEX
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        getwchar
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INDEX
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        _getwchar_r
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ANSI_SYNOPSIS
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        #include <wchar.h>
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        wint_t getwchar(void);
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        wint_t _getwchar_r(struct _reent *<[reent]>);
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TRAD_SYNOPSIS
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        #include <wchar.h>
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        wint_t getwchar();
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        wint_t _getwchar_r(<[reent]>)
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        char * <[reent]>;
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DESCRIPTION
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<<getwchar>> function or macro is the wide character equivalent of
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the <<getchar>> function.  You can use <<getwchar>> to get the next
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wide character from the standard input stream.  As a side effect,
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<<getwchar>> advances the standard input's current position indicator.
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The alternate function <<_getwchar_r>> is a reentrant version.  The
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extra argument <[reent]> is a pointer to a reentrancy structure.
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RETURNS
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The next wide character cast to <<wint_t>>, unless there is no more
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data, or the host system reports a read error; in either of these
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situations, <<getwchar>> returns <<WEOF>>.
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You can distinguish the two situations that cause an <<WEOF>> result by
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using `<<ferror(stdin)>>' and `<<feof(stdin)>>'.
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PORTABILITY
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C99
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*/
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#include <_ansi.h>
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#include <reent.h>
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#include <stdio.h>
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#include <wchar.h>
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#include "local.h"
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#undef getwchar
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wint_t
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_DEFUN (_getwchar_r, (ptr),
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        struct _reent *ptr)
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{
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  return _fgetwc_r (ptr, stdin);
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}
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/*
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 * Synonym for fgetwc(stdin).
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 */
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wint_t
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_DEFUN_VOID (getwchar)
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{
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  _REENT_SMALL_CHECK_INIT (_REENT);
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  return fgetwc (stdin);
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}

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