| /* |
| * 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 */ |
| |