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