1 /*
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * and/or other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley. The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16 */
17
18 /*
19 FUNCTION
20 <<putchar>>---write a character (macro)
21
22 INDEX
23 putchar
24 INDEX
25 _putchar_r
26
27 SYNOPSIS
28 #include <stdio.h>
29 int putchar(int <[ch]>);
30
31 int putchar( int <[ch]>);
32
33 DESCRIPTION
34 <<putchar>> is a macro, defined in <<stdio.h>>. <<putchar>>
35 writes its argument to the standard output stream,
36 after converting it from an <<int>> to an <<unsigned char>>.
37
38 The alternate function <<_putchar_r>> is a reentrant version. The
39 extra argument <[reent]> is a pointer to a reentrancy structure.
40
41 RETURNS
42 If successful, <<putchar>> returns its argument <[ch]>. If an error
43 intervenes, the result is <<EOF>>. You can use `<<ferror(stdin)>>' to
44 query for errors.
45
46 PORTABILITY
47 ANSI C requires <<putchar>>; it suggests, but does not require, that
48 <<putchar>> be implemented as a macro.
49
50 Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
51 <<lseek>>, <<read>>, <<sbrk>>, <<write>>.
52 */
53
54 #if defined(LIBC_SCCS) && !defined(lint)
55 static char sccsid[] = "%W% (Berkeley) %G%";
56 #endif /* LIBC_SCCS and not lint */
57
58 /*
59 * A subroutine version of the macro putchar.
60 */
61
62 #define _DEFAULT_SOURCE
63 #include <_ansi.h>
64 #include <stdio.h>
65 #include "local.h"
66
67 #undef putchar
68
69 int
putchar(int c)70 putchar (
71 int c)
72 {
73 _REENT_SMALL_CHECK_INIT (ptr);
74 return putc ( c, stdout );
75 }
76
