0,0 → 1,124 |
/* |
* 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 |
<<putc>>---write a character (macro) |
|
INDEX |
putc |
INDEX |
_putc_r |
|
ANSI_SYNOPSIS |
#include <stdio.h> |
int putc(int <[ch]>, FILE *<[fp]>); |
|
#include <stdio.h> |
int _putc_r(struct _reent *<[ptr]>, int <[ch]>, FILE *<[fp]>); |
|
TRAD_SYNOPSIS |
#include <stdio.h> |
int putc(<[ch]>, <[fp]>) |
int <[ch]>; |
FILE *<[fp]>; |
|
#include <stdio.h> |
int _putc_r(<[ptr]>, <[ch]>, <[fp]>) |
struct _reent *<[ptr]>; |
int <[ch]>; |
FILE *<[fp]>; |
|
DESCRIPTION |
<<putc>> is a macro, defined in <<stdio.h>>. <<putc>> |
writes the argument <[ch]> to the file or stream identified by |
<[fp]>, after converting it from an <<int>> to an <<unsigned char>>. |
|
If the file was opened with append mode (or if the stream cannot |
support positioning), then the new character goes at the end of the |
file or stream. Otherwise, the new character is written at the |
current value of the position indicator, and the position indicator |
advances by one. |
|
For a subroutine version of this macro, see <<fputc>>. |
|
The <<_putc_r>> function is simply the reentrant version of |
<<putc>> that takes an additional reentrant structure argument: <[ptr]>. |
|
RETURNS |
If successful, <<putc>> returns its argument <[ch]>. If an error |
intervenes, the result is <<EOF>>. You can use `<<ferror(<[fp]>)>>' to |
query for errors. |
|
PORTABILITY |
ANSI C requires <<putc>>; it suggests, but does not require, that |
<<putc>> be implemented as a macro. The standard explicitly permits |
macro implementations of <<putc>> to use the <[fp]> argument more than once; |
therefore, in a portable program, you should not use an expression |
with side effects as this argument. |
|
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 */ |
|
#include <_ansi.h> |
#include <stdio.h> |
#include "local.h" |
|
/* |
* A subroutine version of the macro putc. |
*/ |
|
#undef putc |
|
int |
_DEFUN(_putc_r, (ptr, c, fp), |
struct _reent *ptr _AND |
int c _AND |
register FILE *fp) |
{ |
int result; |
CHECK_INIT (ptr, fp); |
_flockfile (fp); |
result = __sputc_r (ptr, c, fp); |
_funlockfile (fp); |
return result; |
} |
|
#ifndef _REENT_ONLY |
int |
_DEFUN(putc, (c, fp), |
int c _AND |
register FILE *fp) |
{ |
#if !defined(PREFER_SIZE_OVER_SPEED) && !defined(__OPTIMIZE_SIZE__) |
int result; |
CHECK_INIT (_REENT, fp); |
_flockfile (fp); |
result = __sputc_r (_REENT, c, fp); |
_funlockfile (fp); |
return result; |
#else |
return _putc_r (_REENT, c, fp); |
#endif |
} |
#endif /* !_REENT_ONLY */ |
|