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/*

 * 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(void *<[reent]>, int <[ch]>);

TRAD_SYNOPSIS

        #include <stdio.h>

        int putchar(<[ch]>)

        int <[ch]>;

        int _putchar_r(<[reent]>, <[ch]>)

        char *<[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 <stdio.h>

#undef putchar

int

_putchar_r (ptr, c)

     struct _reent *ptr;

     int c;

{

  return __sputc (c, _stdout_r (ptr));

}

#ifndef _REENT_ONLY

int

putchar (c)

     int c;

{

  /* CHECK_INIT is (eventually) called by __swbuf.  */

  return _putchar_r (_REENT, c);

}

#endif