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/* |
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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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<>---write a character (macro) |
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INDEX |
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putchar |
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INDEX |
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_putchar_r |
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ANSI_SYNOPSIS |
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#include |
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int putchar(int <[ch]>); |
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int _putchar_r(struct _reent *<[reent]>, int <[ch]>); |
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TRAD_SYNOPSIS |
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#include |
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int putchar(<[ch]>) |
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int <[ch]>; |
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int _putchar_r(<[reent]>, <[ch]>) |
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struct _reent *<[reent]>; |
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int <[ch]>; |
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DESCRIPTION |
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<> is a macro, defined in <>. <> |
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writes its argument to the standard output stream, |
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after converting it from an <> to an <>. |
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The alternate function <<_putchar_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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If successful, <> returns its argument <[ch]>. If an error |
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intervenes, the result is <>. You can use `<>' to |
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query for errors. |
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PORTABILITY |
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ANSI C requires <>; it suggests, but does not require, that |
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<> be implemented as a macro. |
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Supporting OS subroutines required: <>, <>, <>, |
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<>, <>, <>, <>. |
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*/ |
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#if defined(LIBC_SCCS) && !defined(lint) |
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static char sccsid[] = "%W% (Berkeley) %G%"; |
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#endif /* LIBC_SCCS and not lint */ |
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/* |
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* A subroutine version of the macro putchar. |
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*/ |
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#include <_ansi.h> |
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#include |
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#include |
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#include "local.h" |
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#undef putchar |
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int |
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_DEFUN(_putchar_r, (ptr, c), |
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struct _reent *ptr _AND |
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int c) |
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{ |
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_REENT_SMALL_CHECK_INIT (ptr); |
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return _putc_r (ptr, c, _stdout_r (ptr)); |
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} |
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#ifndef _REENT_ONLY |
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int |
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_DEFUN(putchar, (c), |
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int c) |
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{ |
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_REENT_SMALL_CHECK_INIT (_REENT); |
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return _putc_r (_REENT, c, _stdout_r (_REENT)); |
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} |
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#endif |