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/* PUTCHAR.C
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*
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* Portions Copyright (c) 1990-2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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*/
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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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<<putchar>>---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 <stdio.h>
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int putchar(int <[ch]>);
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int _putchar_r(void *<[reent]>, int <[ch]>);
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TRAD_SYNOPSIS
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#include <stdio.h>
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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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char *<[reent]>;
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int <[ch]>;
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DESCRIPTION
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<<putchar>> is a macro, defined in <<stdio.h>>. <<putchar>>
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writes its argument to the standard output stream,
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after converting it from an <<int>> to an <<unsigned char>>.
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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, <<putchar>> returns its argument <[ch]>. If an error
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intervenes, the result is <<EOF>>. You can use `<<ferror(stdin)>>' to
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query for errors.
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PORTABILITY
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ANSI C requires <<putchar>>; it suggests, but does not require, that
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<<putchar>> be implemented as a macro.
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Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
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<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
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*/
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/*
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* A subroutine version of the macro putchar
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*/
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#include <stdio_r.h>
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#include "LOCAL.H"
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#undef putchar
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/**
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A reentrant version of putchar().
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*/
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EXPORT_C int
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_putchar_r (struct _reent *ptr,int c)
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{
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return __sputc ((unsigned char)c, _stdout_r (ptr));
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}
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#ifndef _REENT_ONLY
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#undef putchar
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/**
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Write character to standard output.
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Writes character to the current position in the standard output
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and increases the file pointer to point to next character.
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This routine cooresponds to: putc(character,stdout).
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@param c Character to be written.
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@return On Success, returns the written character.
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On Failure, EOF is returned and errno may be set.
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*/
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EXPORT_C int
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putchar (int c)
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{
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/* CHECK_INIT is (eventually) called by __swbuf. */
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struct _reent *r = _REENT2;
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if (!r)
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return EOF; // Memory for library globals is not allocated (errno not set).
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return(_putchar_r (r, c));
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}
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#endif
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